qBittorrent official forums

hi there! using qbittorent for a while now, quite happy.

while trying to download some very heavy torrents (1080p shows, 80 giga files) on a 40mb speed (top 33) i was getting no more than max 60kb... not very practical.

than i so on a pia forum (i am not using a vpn )that unchecking the rate limit setting, and setting max connections to less than 500/100 (mine was set to 50/25) than i got way better transfer speeds 300,400, 1.2mb. i was evan able to use my internet normaly without any speed limit (usually when i download torrents, my browsing speed slows down very much) now after almost 20 hours like this, the downloads slowd down to a crawl... again. some files are in the bits not evan 1 kb... and my internet is unusablle agian so currently i had to stop the download to aplly for help here.

if someone has any suggestion, i will take it. some of the files wnt from 2 percent to 90 and 70 percent, i was very close to finish my download. oh and one more detail. sometimes but not always when i restart the software or resume download form a pause, it satrt very fast again for afew seconds minute or two, than slows down again. pleasehelp me! thanks in advance.

Once "my internet is unusablle agian", is qBitTorrent using lots of CPU and/or lots of ram?

Assuming the problem isn't a bug in qBitTorrent itself... there's lots of possible causes. These are pseudo-examples:

"Quick update. I turned off windows defender and was able to download x265 no problem."    https://www.reddit.com/r/qBittorrent/co ... 265_files/
"Was able to find the reason for this.  It was the Killer Networking Service that was capping it.  Disabled it and now there are no more issues."    https://www.reddit.com/r/qBittorrent/co ... bs_on_lan/
More drivers-from-another-program-causing problems:    https://dev.deluge-torrent.org/ticket/2741#comment:7
More fun due to bad drivers:    https://github.com/qbittorrent/qBittorr ... -466785616

just to update, i don't know exactly what did it, bit as i stated, occasionally when i stopped my downloads than resumed the speed went up by a lot, than after a few seconds return to normal. i tried this trick a couple of times, and just out of the blue it stuck and i was able to compleate it. i wish there was a sure fireway to make this speed stable. i was so happy and was not gonna jinx it, so i did not touch the net for a while... so if maybe could give hints to the software developers, it will ne good. anyway thank you for those tips, will definitely try rhose next time i'm in such a problem.

PIA's VPNs may also be to blame...overloaded VPN servers could cause intermittent problems.