Does your isp like torrents? some are banned among other efforts to rob artists of their talents =c
Whats the signal doing during all this?
torrents use http port :80 sometimes ftp, depending on how things are setup... there may also be other ports and protocols (udp and others are also controlled by the router.)
How many pc's are you seeding/downloading from. Wifi will try to connect to thousands of ip's if it can. But this places alot of load on the pc, not to mention the device itself. You'll time-out and lose internet in this situation too...I used to use torrents too...i could gett 255+ pc's uploading, streaming, downloading, previewing...seeding...For each device i had. (4 ethernet and 4 wifi-g at one point)
But even with minimum bandwidth allowed...it would tax cpu cycles..sometimes even crashing the poor little single core p4. with 2 gigs of ram xD