turning on utorrent slows down all download/upload speeds

[eidam655]

hello,

i am quite sure that this is standard utorrent behavior, but maybe someone could explain to me, why is this happening, or maybe someone could spot it as a bug, not a feature.

when utorrent is off, NetLimiter shows download speeds around 90kB/s, upload speeds around 40kB/s, so it's pretty ok for normal surfing. also, all the internet speed tests i make tell me that the connection is running nicely and somewhat quickly.

however, after i turn on utorrent, _all_ the other traffic drops to very low levels (5 to 15kB/s), but the speed on the torrents does not compensate this difference (seen especially when downloading a torrent where seeders' upload speed is limited to 0.5kB/s -.-" ).

i thought that bittorrent clients let other applications just fine and don't affect their network usage up to the point where higher download speeds from peers are available, in which case it would just slice a bit more from the internet speed cake. but it seems, that utorrent first reserves all the bandwidth and only then lets other application access the internet?

so, the question is - could anyone explain to me, why this occurs?

thank you for any answer.

[DreadWingKnight]

but it seems, that utorrent first reserves all the bandwidth and only then lets other application access the internet?

Nope. You're overloading something. My first thought is that you're overloading the SPI firewall in your router.