500kB/sec initial connection speed slows to 240KB/sec

[scottsee]

I'm not sure what else to do, I've been through the FAQ, Speed tests, Analyzer's, How-to's, Search button & Google. When I start Utorrent my speed Jumps to the max connection speed then slows down to 200-250kb after 45 seconds or so. Because I'm on a shared bandwith with Comcast late at night I can get initally get 780kB before dropping to 250ish-kB/sec. I downloaded Open Office 3 times back to back at 600-700kBps to test the connection. I need help figureing this out. I feel like I'm leaving out somthing about my settings, so if you see somthing I'm not listing let me know..

EDIT: I am currently downloading 47 torrents at the moment

EDIT : My wireless network connection dies alot, It dosen't pop up and say "Network connection lost". Unless I restart the wirless connection there is no internet connectivity.. Not sure if these two issues are connected, I've followed the steps in fixing this problem with decent results, but it still happens every so often, but not like it use to..

Netgear Wireless Router WGR614 v6 with updated firmware

Intel® PRO/Wireless 2200B Network Connection

Dell XPS M140 Laptop

1.8ghz 512meg

Windows XP Service pack 2

TCPIP.sys Patch

TCPOptimiser 3500

« SpeedGuide.net TCP Analyzer Results »

Tested on: 09.17.2007 00:24

IP address: 67.185.xxx.xxx

TCP options string: 020405b40103030201010402

MSS: 1460

MTU: 1500

TCP Window: 256960 (multiple of MSS)

RWIN Scaling: 2

Unscaled RWIN : 64240

Reccomended RWINs: 64240, 128480, 256960, 513920

BDP limit (200ms): 10278kbps (1285KBytes/s)

BDP limit (500ms): 4111kbps (514KBytes/s)

MTU Discovery: ON

TTL: 45

Timestamps: OFF

SACKs: ON

IP ToS: 00100000 (32)

Precedence: 001 (priority)

Delay: 0 (normal delay)

Throughput: 0 (normal throughput)

Reliability: 0 (normal reliability)

Cost: 0 (normal cost)

Check bit: 0 (correct)

DiffServ: CS1 001000 (8) - class 1 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

Utorrent 1.7.5 settings

xx/640k

Port corretly forwarded

Disabled UPnP

Max upload 60kB

Max Down 800kB

Global max 150

max peers 100

upload slots 4

dissabled DHT

Encryption Enabled

Net.max_halfopen 8

[Switeck]

Sounds like ComCast's Speed Boost at work.

[scottsee]

So not much I can do hu...

[Switeck]

Further tweaks might be possible.

...But I don't know if your connection is xx/384k or xx/768k variety.

What upload speed can it SUSTAIN for more than 5 minutes straight?

[scottsee]

Thats a good Question. Should I play with the MAX Upload setting until It maxes out? Right now its set at 60kB and I belive that is what it is transfering at. I'm at the office right now, I'll check it out when I get home this evening.

I would sure love to sustain the 700kB transfer rates I receive for 45sec-1min when I initially open Utorrent!!

Edit: Got home from work

8 hours connected while I was at work with an average upload speed of 33k. That dosen't make sence to me with the connection spped and settings i have.. I restarted Utorrent and watched the inital Upload speed where it peaked at 230k before droping to around 50k, then to 40k.... I'm confused whats going on here... Any Ideas?

[worldishis]

bump

[Switeck]

SpeedBoost at work, providing about 1 minute of faster upload speeds:

"I restarted Utorrent and watched the inital Upload speed where it peaked at 230k before droping to around 50k, then to 40k...."

The final upload speed of around 40 KiloBYTES/sec is probably pretty close to the real, sustainable upload speed...which means the xx/384k setting in Speed Guide is the closest match.