A quote from the bms forums "UP speed for client is not as much as important than for the host side. What is very important for the client side is the DOWN speed and with bms 4.33 in campaign mode, the clients need to set at least bw 1024 just to be sure to have enough DOWN speed to receive every mp packets sent by the host and by the other clients " This ties in exactly with what I wrote a few posts above. Namely that the BW relates to what the client is willing to DOWNLOAD from the host. That being my perception I will next try 2048 which I certainly can not actually provide as an upload but which I can as download rate.