uTorrent 2.2 slows down after about 24 hours

[birthdaymonkey]

Hi,

I've been using uTorrent for years without many problems at all, but recently I've been having issues. Everything runs great for about 24 hours, but after seeding for about a day, all transfers slow down to a crawl. Normally, I can get 3.0 MB per second down on a well seeded torrent, but after uTorrent's been running for a while the speed gets all screwy. Say I open a new torrent: the download rate will shoot up to a decent level, but then it immediately falls off to a few KB/sec. Occasionally it spikes again before slowing down. My upload, which normally varies between 300-500 KB/sec, also slows down to a trickle. If I exit uTorrent - which, when it's in this state, often causes it to crash, requiring an 'end process' in task manager - and then restart, the problem is fixed... for about 24 hours, at which point it slows down again. I have no antivirus or software firewall active, and the machine is in pristine condition (recently re-installed Win7 on an SSD). This is an HTPC/server so there's not much other software running that could conflict with uTorrent.

Thanks in advance for helping me!

[Switeck]

Networking overload by the sound of it...possibly from too many (UDP?) connections at once rather than too fast. If the networking is REALLY screwed up, when uTorrent tries to shut down it can't even close connections properly...but waits till they close before ending itself in memory. (Which doesn't seem to be happening in your case.)

See if disabling things in uTorrent works:

UPnP, NAT-PMP, DHT, LPD, uTP (Bandwidth Management), Resolve IPs, net.disable_incoming_ipv6, and possibly even Teredo/IPv6 (though you have to disable that in windows not uTorrent).

Also try reducing max connections: global (to 100-200), per-torrent (to 30-60), bt.connect_speed (to 1-4), and net.max_halfopen (to 8).

[birthdaymonkey]

Thanks for the suggestions. I found all those settings except for the resolve IPs one... Where do I find that?

[moogly]

In the Peers tab, just right click and disable IP resolution if it's enabled.