problems with avast and windows 8 seeding and downloading

[nagisa aoi]

for some reason when I try to start a torrent with bit torrent and Utorrent (my main client is bittorrent) I have to stop the web and network shields in avast in order for it to work (otherwise it says the tracker is sending invalid data)
I don't know how much I am uploading of each torrent but it does not appear to be much (my upload is not restricted but I never see the bakabt torrents actually uploading anything unless I am downloading them once they are downloaded they stop uploading) but I still get the points for seeding bonus torrents (and a lot of them as well O.o) and my active torrents say I have a lot active and uploading

I am running windows 8 64 bit (I know its a mistake but its too much of a hastle to install windows 7 again because I need to back up half a TB of information)
my bittorent version is 7.7.3
and avast is at the latest version with the latest virus definitions
my internet is also very slow (usualy I get around 180 kbps download sometimes it can get to 250-260 upload can get up to about 80kbps - maximum I have seen)

anyone know how to fix this at all?

the most I have uploaded on a single torrent recently is apparently 28mb on yosuga no sora (and I am still downloading that one it is currently saying it is uploading at a rate of 1-3kbps)

[Freedom Kira]

Update Avast again. From what I've seen on the forums, an update from Avast about a week ago resolved that particular error message for people using Avast on Windows 8. I think the others were using uTorrent, but I doubt that makes much of a difference.

Try disabling uTP to improve your speeds. Just a shot in the dark. If that doesn't help, try using uTorrent 1.8.5 and see what kinds of speeds you get.

[5ynthetic]

you should also double check that your avast and windows firewalls have exceptions for your torrent client