An unconfirmed side effect of this bandwidth limiting is file transfers cut off and retry. More specifically since upstream bandwidth for P2P at my university is saturated uploads give a Transfer Interrupted message about every 32 K of progress.

Last spring I saw a few uploads not give errors and at that point the connection was less likely to be saturated since it was finals week and a number of students had already left. Increasing the timeout for uploads may improve things by reducing the number of reconnects. I do realize swarm downloads also give Transfer Interrupted messages but the amount of data transferred isn't large enough and the uploads often reconnect.