Download speed decreases dramatically when video is being played

[Koshara]

Hello,

Recently I've noticed strange behavior of uTorrent - anytime I watch video - download speed goes totally down (from 5-7 MB/s to 100-200 KB/s (yes, MegaBytes/sec and KiloByte/sec)).

Absolutely no difference what quality video I watch (poor quality DivX, HDrip, BDrip, HDTVrip, HDTV, BDremux, etc.) and what played do I use (MediaPlayer Classic Home Cinema (MPC-HC), GomPlayer, Windows MediaPlayer 11, etc.)

As long as I stop and close the player - speed goes up again. And as long I open it and press "play" - goes down.

Also there's no difference where media files are (same disk, different physical disk, removable media, etc.)

Illustration:

1 - Torrent download started

2 - MPC-HC started

3 - MPC-HC closed

4 - GOM player started

5 - GOM player closed

6 - Windows Media Player started

7 - Windows Media Player closed

etc, etc, etc.

CPU load - 40% max (GPU takes main load on HD files)

Memory load - 40% max (of 4 GB)

Download location - internal SATA RAID 0 (Stripe)

Athlon X2 5000+ (2.6 GHz) on nVidia n590

uTorrent version - 2.0.2 (latest at the moment)

Windows 7

System is clean - absolutely no unnecessary software, no "tweaks" or smth like that.

I'm not a noob, but I have to admit - I'm out of ideas, don't know what to blame. Seems like I've already ruled every possible reason out.

Any ideas?

Thanks!

EDIT:

P.S. Forgot to mention - I've used search function of this forum, used Google and all other search methods available. Found no solution.

This post is my last chance.

[paintball9]

Don't think its related to your problem but you mentioned the gpu taking load off the decoding. If you're cpu is running at 40% when playing a video then your gpu isnt helping anything. And not every player you mentioned there supports that function either, MPC for instance only supports pixel shading (to enhance the video), VLC gpu decoding is very experimental so far and only works on the newer of nVidia gpu's, ATI does not work yet. and Windows Media Player does not support any of those functions yet.

Curious, what kind of graphics card are you using, and what resolution and codec was the video you were playing during that graph.

One thing I did notice was that both upload and download go when starting a video which would lead me to believe an entire network lag/failure. Can you try with another bandwidth intensive program and see if the same thing happens playing a video. I'm guessing this problem is not unique to uTorrent. Try and find another bandwidth monitor to watch while doing this. My recommendation is find a large http based download to test it with.

[Koshara]

2 paintball9:

I'm using MSI GeForce 8800GT 1 GB OC.

And as I mentioned above - 40% are MAX CPU load.

Dual display (Primary 22" monitor - 1680x1050 and Secondary 40" LCD TV - 1920x1080). Both DVI.

I usually use MPC-HC and there's a noticeable difference on CPU load with or without GPU support enabled.

No additional codecs packs are installed. Using internal. MPC-HC have everything needed to play virtualy any movie. So does GOM player.

Grath could be reproduced with any source.

But I believe this is not relevant to the problem with download speed.

I was thinking of network lag causing this problem, but I can't imagine a connection between media being played and network lag. The only connection I see here is that NIC is MB integrated, theoretically could cause some influence on chipset load. But I don't think so...

But I will definitely try to test network speed on http download.

Any other thoughts or suggestions?

[Switeck]

Your upload speed max limit bar (faint red line) is much higher than any uploading shown in your picture. Can uTorrent ever reach that limit?

[Koshara]

2 Switeck - yes, definitely. And quite often.

Upload limit is set to 5120 KB/s and my bandwidth (upload/download) is 70 mbps inside the country and 7 mbps outside the country, so if local peer is connected - he can get as much as he can take.

Of course, peers from abroad get to many bottlenecks.

But how is upload limit is relevant to download speed during video playback?

EDIT:

By the way, upload speed goes down as well. You can see that on the grath.

[GTHK]

Additional steps might be needed to get GPU acceleration going, if your card even supports that. That aside, you have a weird problem. Internet security software? Have you taken a look at the Disk Statistics in µT? Updated network/disk/chipset drivers?

[paintball9]

Can you try with another bandwidth intensive program and see if the same thing happens playing a video. I'm guessing this problem is not unique to uTorrent. Try and find another bandwidth monitor to watch while doing this. My recommendation is find a large http based download to test it with.

[rafi]

My bet - re-set re-tune your HD cache:

- see my tips/sig for recommended uT DH cache settings ([A])

- increase the read cache a bit

- try to disable indexers on that drive

PS:

- post the uT cache graphs with the above

- upgrade to 2.03 to improve download overhead in the near future...

- we only support the latest versions ...

[Koshara]

2 GTHK - GPU support is on, for sure. No internet security sw, all drivers are up to date.

2 paintball9 - I did tried http download - not affected by video players.

2 rafi:

- see my tips/sig for recommended uT DH cache settings ([A])

**Already done. Settings were OK.

- increase the read cache a bit

**Already tried that. Tried again. No effect.

- try to disable indexers on that drive

**Done (disabled indexing on download directory). No effect.

- post the uT cache graphs with the above

**Here Goes:

- upgrade to 2.03 to improve download overhead in the near future...

**Done. No effect:

- we only support the latest versions ...

**OK, I'm using latest version now

Any suggestions?

[rafi]

post your advanced->cache settings screenshot

Edit:

Oh, and I forgot to tell you - to just replace your player with KMPlayer...

[Koshara]

2 rafi -

Here's cache settings:

You don't believe me? Told you, settings are the same as your recommended. Well except for automatic cache size increase. But I don't think this is relevant.

And what about MPC-HC. You know something I don't?

Or just personal preferences?

Never ending holy war? Which media player is the best? VLC, MPC, KMPlayer?

[GTHK]

Yay MPC:HC. I think the mpc-hc site had some info on extra steps that had to be done to enable and then test GPU support, but I'm not sure..

Drivers updated from where? Microsoft update doesn't do good enough, make sure you got your drivers direct from the manufacturer, and if applicable from the company that built the whole system.

[rafi]

You don't believe me?

sure I do... now...

No harm in trying another player... (yay, KMPlayer... )

[paintball9]

Could be nvidia's network drivers (noticed you have an nv chipset) try removing the software that came with it, apparently it can cause a lot of problems with stuff like this.

[Koshara]

2 GTHK - GPU support enabled. I'm sure. And anyway even if you presume it is not - this is not the issue. CPU load is less than a half (with player, uTorrent, browser and etc running). MPC-HC using MAX 20% of CPU during HD content playback.

And of course I'm not using windows update for newest drivers. Downloaded from www.nvidia.com.

2 rafi - I did tried another players, as I mentioned in my first post. Not the issue, I suppose.

2 paintball9 - yes, that might be a source of a problem. There's some additional software from nvidia, such as NVMonitor, Nvidia Control Panel and etc. But it's hard to believe, that software for monitoring and change of settings (just an interface) can be the issue. But I'll try to remove everything from nVidia in the evening. Thanks!

[rafi]

Strange - your cache graph says - 32M and the setting - 64M tho ... A bug ?

also - try disable - "turn off read cache when upload is slow"

[Koshara]

2 rafi - nope, not a bug, I was trying different settings, noticed that 32M cache is not enough on local downloads, so I've doubled the amount. Probably screenshot is made before that.

Now it's 64M.

OK, I will try to disable "turn off read cache when upload is slow". I can't see the connection to the issue, though.

[Koshara]

2 paintball9 - I removed all relevant nVidia sowtware (nTune and Network Management utility) - no positive results. Problem presist.

2 rafi - "turn off read cache when upload is slow" disabled. No effect.

[anotheruser]

maybe this can help you

http://support.microsoft.com/kb/948066

seems to be the same in Windows 7

http://wiert.wordpress.com/2010/02/09/windows-vista7-solution-for-multimedia-flash-throttles-your-network-networkthrottlingindex/

[Koshara]

2 anotheruser - very interesting idea you have. Definitely worth a try.

Only one small thing - quote from your second link:

"The throttling by default is 10, meaning 10 network packets per millisecond (10000 per second), which counts for about 15 megabytes per second.

This is more than one 100 megabit network connection can deliver, but a lot less than one gigabit connection can deliver."

I'm sitting on 100 mbps network, have 1 NIC (second is disabled), no Wi-Fi or VMs, so, even with throttling enabled I still should get my 70 mbps, but as I said before - download speed drops down dramatically - from 5-7 MB/s to 300-500 KB/s.

But still, I will definitely try to increase or maybe even disable (as an experiment) throttling index.

Thanks! I will keep you posted!

[Switeck]

1st link in my signature, last post, last section of that last post.

HijackThis and Process Explorer (plus DLL list!) logs are the only things I can see left to try.

I don't know what that'll show, if anything...and making sense of complex computer setups using them is almost beyond my ability, but maybe someone else will spot a "problem child" in the lists.

[Koshara]

OK, here goes. Sorry for a long lists. Unfortunately it is not allowed to attach text files here..

Computer running in "usual" mode.

Opened software - uTorrent, Firefox, Total Commander, Media Player Classic Home Cinema.

HijackThis log:

Logfile of Trend Micro HijackThis v2.0.4

Scan saved at 18:38:58, on 2010-07-30

Platform: Windows 7 (WinNT 6.00.3504)

MSIE: Internet Explorer v8.00 (8.00.7600.16385)

Boot mode: Normal

Running processes:

C:\Windows\System32\FSRremoS.EXE

C:\Program Files (x86)\AVG\AVG8\avgtray.exe

C:\Windows\SysWOW64\Ctxfihlp.exe

C:\Windows\SysWOW64\CTXFISPI.EXE

C:\Program Files (x86)\Mozilla Firefox\firefox.exe

C:\Program Files (x86)\Mozilla Firefox\plugin-container.exe

C:\Program Files (x86)\Totalcmd\TOTALCMD.EXE

C:\Program Files (x86)\uTorrent\uTorrent.exe

C:\Program Files (x86)\Trend Micro\HiJackThis\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://owa.teo.lt/owa

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =

R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm

R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =

F2 - REG:system.ini: UserInit=userinit.exe

O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll

O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files (x86)\AVG\AVG8\avgssie.dll

O2 - BHO: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll

O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~2\AVG\AVG8\avgtray.exe

O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe"

O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe"

O4 - HKLM\..\Run: [CTxfiHlp] CTXFIHLP.EXE

O4 - HKLM\..\Run: [amd_dc_opt] C:\Program Files (x86)\AMD\Dual-Core Optimizer\amd_dc_opt.exe

O4 - HKCU\..\Run: [sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun

O4 - HKUS\S-1-5-19\..\Run: [sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'LOCAL SERVICE')

O4 - HKUS\S-1-5-19\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'LOCAL SERVICE')

O4 - HKUS\S-1-5-20\..\Run: [sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /autoRun (User 'NETWORK SERVICE')

O4 - HKUS\S-1-5-20\..\RunOnce: [mctadmin] C:\Windows\System32\mctadmin.exe (User 'NETWORK SERVICE')

O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~2\MICROS~1\Office12\EXCEL.EXE/3000

O9 - Extra button: Skype add-on for Internet Explorer - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll

O9 - Extra 'Tools' menuitem: Skype add-on for Internet Explorer - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll

O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~1\Office12\REFIEBAR.DLL

O16 - DPF: {F6ACF75C-C32C-447B-9BEF-46B766368D29} (Creative Software AutoUpdate Support Package) - http://ccfiles.creative.com/Web/softwareupdate/su2/ocx/15112/CTPID.cab

O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files (x86)\AVG\AVG8\avgpp.dll

O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll

O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)

O23 - Service: AVG8 E-mail Scanner (avg8emc) - AVG Technologies CZ, s.r.o. - C:\PROGRA~2\AVG\AVG8\avgemc.exe

O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~2\AVG\AVG8\avgwdsvc.exe

O23 - Service: Creative ALchemy AL6 Licensing Service - Creative Labs - C:\Program Files (x86)\Common Files\Creative Labs Shared\Service\AL6Licensing.exe

O23 - Service: Creative Audio Engine Licensing Service - Creative Labs - C:\Program Files (x86)\Common Files\Creative Labs Shared\Service\CTAELicensing.exe

O23 - Service: Creative Audio Service (CTAudSvcService) - Creative Technology Ltd - C:\Program Files (x86)\Creative\Shared Files\CTAudSvc.exe

O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)

O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)

O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)

O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)

O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)

O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)

O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)

O23 - Service: @%SystemRoot%\system32\sppsvc.exe,-101 (sppsvc) - Unknown owner - C:\Windows\system32\sppsvc.exe (file missing)

O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)

O23 - Service: @%SystemRoot%\system32\vaultsvc.dll,-1003 (VaultSvc) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)

O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)

O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)

O23 - Service: @%SystemRoot%\system32\Wat\WatUX.exe,-601 (WatAdminSvc) - Unknown owner - C:\Windows\system32\Wat\WatAdminSvc.exe (file missing)

O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)

O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)

O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)

--

End of file - 7442 bytes

Process Explorer log:

Process PID CPU Private Bytes Working Set Description Company Name

System Idle Process 0 42.75 0 K 24 K

Interrupts n/a 3.00 0 K 0 K Hardware Interrupts

DPCs n/a 0.75 0 K 0 K Deferred Procedure Calls

System 4 3.00 332 K 106,116 K

smss.exe 288 428 K 1,092 K

csrss.exe 376 2,212 K 4,272 K

wininit.exe 440 1,488 K 4,408 K

services.exe 496 4,840 K 8,792 K

svchost.exe 624 4,088 K 9,276 K Host Process for Windows Services Microsoft Corporation

WmiPrvSE.exe 2760 3,100 K 6,844 K

CTxfispi.exe 3000 8,648 K 8,948 K SPI (Creative X-Fi Module) Creative Technology Ltd

unsecapp.exe 2080 1,700 K 5,368 K Sink to receive asynchronous callbacks for WMI client application Microsoft Corporation

nvvsvc.exe 696 1,580 K 4,684 K NVIDIA Driver Helper Service, Version 197.45 NVIDIA Corporation

nvvsvc.exe 1036 2,960 K 7,972 K

svchost.exe 740 3,988 K 7,732 K Host Process for Windows Services Microsoft Corporation

svchost.exe 836 19,064 K 20,476 K Host Process for Windows Services Microsoft Corporation

audiodg.exe 632 14,588 K 15,264 K

svchost.exe 892 91,076 K 95,604 K Host Process for Windows Services Microsoft Corporation

dwm.exe 1412 8.25 25,380 K 38,596 K Desktop Window Manager Microsoft Corporation

svchost.exe 932 21,780 K 38,884 K Host Process for Windows Services Microsoft Corporation

CTAudSvc.exe 332 1,272 K 4,224 K Creative Audio Service Creative Technology Ltd

svchost.exe 548 7,916 K 14,768 K Host Process for Windows Services Microsoft Corporation

svchost.exe 1120 24,964 K 31,132 K Host Process for Windows Services Microsoft Corporation

spoolsv.exe 1220 6,104 K 11,048 K Spooler SubSystem App Microsoft Corporation

svchost.exe 1260 9,976 K 14,068 K Host Process for Windows Services Microsoft Corporation

taskhost.exe 1352 8,136 K 9,608 K Host Process for Windows Tasks Microsoft Corporation

avgwdsvc.exe 1592 6,980 K 2,608 K AVG Watchdog Service AVG Technologies CZ, s.r.o.

avgam.exe 1960 3,704 K 424 K

avgrsa.exe 1976 57,384 K 432 K

avgnsa.exe 3404 25,016 K 34,512 K

svchost.exe 1656 4,920 K 8,912 K Host Process for Windows Services Microsoft Corporation

avgemc.exe 1912 5,456 K 1,924 K AVG E-Mail Scanner AVG Technologies CZ, s.r.o.

avgcsrvx.exe 2236 9,540 K 11,524 K

SearchIndexer.exe 2856 28,920 K 16,084 K Microsoft Windows Search Indexer Microsoft Corporation

wmpnetwk.exe 3248 3,844 K 3,668 K Windows Media Player Network Sharing Service Microsoft Corporation

svchost.exe 3136 73,720 K 32,304 K Host Process for Windows Services Microsoft Corporation

msiexec.exe 1440 9,424 K 19,476 K Windows® installer Microsoft Corporation

lsass.exe 520 4,356 K 10,664 K Local Security Authority Process Microsoft Corporation

lsm.exe 528 2,548 K 4,216 K

csrss.exe 472 9,312 K 20,764 K

winlogon.exe 796 2,888 K 6,944 K

explorer.exe 1468 25,848 K 45,712 K Windows Explorer Microsoft Corporation

nvraidservice.exe 2164 2,712 K 7,724 K NVIDIA RAID Service English language NVIDIA Corporation

ico.exe 2188 1,492 K 4,300 K Mouse Suite 98 Daemon Primax Electronics Ltd.

FSRremoS.EXE 2392 2,168 K 5,688 K sysinf_s MFC Application

PELMICED.EXE 2800 3,012 K 8,108 K Mouse Suite 98 Daemon Primax Electronics Ltd.

sidebar.exe 2204 4.50 16,012 K 35,680 K Windows Desktop Gadgets Microsoft Corporation

firefox.exe 3084 9.00 210,388 K 236,168 K Firefox Mozilla Corporation

plugin-container.exe 2708 14,908 K 20,796 K Plugin Container for Firefox Mozilla Corporation

TOTALCMD.EXE 1700 12,476 K 25,752 K Total Commander 32 bit international version, file manager replacement for Windows C. Ghisler & Co.

mpc-hc64.exe 2380 16.50 191,368 K 106,844 K Media Player Classic - Homecinema mpc-hc@Sourceforge

procexp.exe 3492 1,524 K 8,192 K Sysinternals Process Explorer Sysinternals - www.sysinternals.com

procexp64.exe 3888 11.25 19,304 K 36,392 K Sysinternals Process Explorer Sysinternals - www.sysinternals.com

uTorrent.exe 1612 1.50 79,788 K 84,984 K µTorrent BitTorrent, Inc.

avgtray.exe 2440 4,096 K 1,660 K AVG Tray Monitor AVG Technologies CZ, s.r.o.

Ctxfihlp.exe 2792 2,724 K 8,672 K CTXfiHlp MFC Application Creative Technology Ltd

Process: uTorrent.exe Pid: 1612

Name Description Company Name Version

ADVAPI32.dll Advanced Windows 32 Base API Microsoft Corporation 6.1.7600.16385

C_1252.NLS

CLBCatQ.DLL COM+ Configuration Catalog Microsoft Corporation 2001.12.8530.16385

COMCTL32.dll User Experience Controls Library Microsoft Corporation 6.10.7600.16385

comdlg32.dll Common Dialogs DLL Microsoft Corporation 6.1.7600.16385

CRYPTBASE.dll Base cryptographic API DLL Microsoft Corporation 6.1.7600.16385

CRYPTSP.dll Cryptographic Service Provider API Microsoft Corporation 6.1.7600.16385

dhcpcsvc.DLL DHCP Client Service Microsoft Corporation 6.1.7600.16385

dhcpcsvc6.DLL DHCPv6 Client Microsoft Corporation 6.1.7600.16385

DnsApi.dll DNS Client API DLL Microsoft Corporation 6.1.7600.16385

dwmapi.dll Microsoft Desktop Window Manager API Microsoft Corporation 6.1.7600.16385

FirewallAPI.dll Windows Firewall API Microsoft Corporation 6.1.7600.16385

fwpuclnt.dll FWP/IPsec User-Mode API Microsoft Corporation 6.1.7600.16385

GDI32.dll GDI Client DLL Microsoft Corporation 6.1.7600.16385

IMM32.DLL Multi-User Windows IMM32 API Client DLL Microsoft Corporation 6.1.7600.16385

Iphlpapi.dll IP Helper API Microsoft Corporation 6.1.7600.16385

kernel32.dll Windows NT BASE API Client DLL Microsoft Corporation 6.1.7600.16385

KERNELBASE.dll Windows NT BASE API Client DLL Microsoft Corporation 6.1.7600.16385

KernelBase.dll.mui Windows NT BASE API Client DLL Microsoft Corporation 6.1.7600.16385

locale.nls

LPK.dll Language Pack Microsoft Corporation 6.1.7600.16385

MSCTF.dll MSCTF Server DLL Microsoft Corporation 6.1.7600.16385

msvcrt.dll Windows NT CRT DLL Microsoft Corporation 7.0.7600.16385

mswsock.dll Microsoft Windows Sockets 2.0 Service Provider Microsoft Corporation 6.1.7600.16385

NSI.dll NSI User-mode interface DLL Microsoft Corporation 6.1.7600.16385

ntdll.dll NT Layer DLL Microsoft Corporation 6.1.7600.16559

ntdll.dll NT Layer DLL Microsoft Corporation 6.1.7600.16559

ole32.dll Microsoft OLE for Windows Microsoft Corporation 6.1.7600.16385

oleaut32.dll Microsoft Corporation 6.1.7600.16385

profapi.dll User Profile Basic API Microsoft Corporation 6.1.7600.16385

rasadhlp.dll Remote Access AutoDial Helper Microsoft Corporation 6.1.7600.16385

RPCRT4.dll Remote Procedure Call Runtime Microsoft Corporation 6.1.7600.16385

rsaenh.dll Microsoft Enhanced Cryptographic Provider Microsoft Corporation 6.1.7600.16385

sechost.dll Host for SCM/SDDL/LSA Lookup APIs Microsoft Corporation 6.1.7600.16385

SHELL32.dll Windows Shell Common Dll Microsoft Corporation 6.1.7600.16532

shfolder.dll Shell Folder Service Microsoft Corporation 6.1.7600.16385

SHLWAPI.dll Shell Light-weight Utility Library Microsoft Corporation 6.1.7600.16385

SortDefault.nls

SspiCli.dll Security Support Provider Interface Microsoft Corporation 6.1.7600.16484

StaticCache.dat

USER32.dll Multi-User Windows USER API Client DLL Microsoft Corporation 6.1.7600.16385

USERENV.dll Userenv Microsoft Corporation 6.1.7600.16385

USP10.dll Uniscribe Unicode script processor Microsoft Corporation 1.626.7600.16385

uTorrent.exe µTorrent BitTorrent, Inc. 2.0.3.20683

uxtheme.dll Microsoft UxTheme Library Microsoft Corporation 6.1.7600.16385

VERSION.dll Version Checking and File Installation Libraries Microsoft Corporation 6.1.7600.16385

WINNSI.DLL Network Store Information RPC interface Microsoft Corporation 6.1.7600.16385

wow64.dll Win32 Emulation on NT64 Microsoft Corporation 6.1.7600.16491

wow64cpu.dll AMD64 Wow64 CPU Microsoft Corporation 6.1.7600.16385

wow64win.dll Wow64 Console and Win32 API Logging Microsoft Corporation 6.1.7600.16385

WS2_32.dll Windows Socket 2.0 32-Bit DLL Microsoft Corporation 6.1.7600.16385

wship6.dll Winsock2 Helper DLL (TL/IPv6) Microsoft Corporation 6.1.7600.16385

wshtcpip.dll Winsock2 Helper DLL (TL/IPv4) Microsoft Corporation 6.1.7600.16385

Hope this will help...

[rafi]

2 anotheruser - very interesting idea you have. Definitely worth a try.

Briliant find (if confirmed...) I wonder what is the effect of this on uT streaming in 2.2 (?) ...

[Switeck]

Assuming the problem isn't caused by what anotheruser pointed out...

You don't have any non-Microsoft DLLs loaded into uTorrent.exe's memory space according to Process Explorer. Normally that's good, but in your case I was kinda hoping for something there which might be an easy fix to remove.

You do have quite a few 3rd party programs running that I haven't seen mentioned here before, so almost any of that could somehow be to blame.

[Koshara]

And the winner is.... Anotheruser!

Yes! His solution WORKED!

I completely turned off throttling and it worked - no download speed decrease at all!

Of course CPU load by uTorrent.exe increased, up to ~50% (fluctuating between 30% and 50%) and up to 60-70% average summary load , but only on a high speed download.

Tested with single torrent. Average download speed - 7 MB/s, max - 7.5 MB/s.

Now I will try to find correct setting for throttling will start with value of 70 and will decrease it little by little until download speed will start to fall down again.

Anotheruser, I owe you a beer

Switeck, what 3rd party programs exactly you were talking about? Just wondering.

EDIT:

Done testing.

Results - with any value from 10 (default) to 70 (maximum) download speed drops down. The only small difference is how low. With "10" it's down to 200-300 KB/s and with 70 down to 600-900 KB/s (some peaks of 1-1.5 MB/s). Still not good.

Bottom line - quote - "Network throttling can be completely turned off by setting the value to FFFFFFFF (hexadecimal)".

Seems like the only solution to me.

Or I might think of getting stand alone NIC with it's own processing capability.

So, that's it guys. I'm really grateful for your help. Take care!