If I turn off QoS, then I can't set the torrent application to low. With QoS enabled, I have the torrent application priority set to low, along with the BT computer's priority at low as well. Right now I disabled UPnP and am back to connecting the computer to the rotuer. For a good hour, I had the computer connected directly to the modem and it was problem free, so this is definitely a firmware or router issue.Try disabling QoS and set your torrent application to low priority.
According to redhawk over at DD-WRT, he suggested that I change the TCP timeout to 600 seconds instead of 120. I have it set at 600 for now, but no one's messaging.