War Rock disconnections with more than 16 players..

[wickedliam]

Right heres my situation, my internet was recently upgraded from 2mb to 20mb and a cable modem installed running between my cable box (Virgin) and router. Before we recieved this upgrade I could play in all game modes with 32 players and not get disconnected, just lag alot. Now after this upgrade whenever I play a game with more than 16 players I eventually just get a "connection terminated from server" disconnection. Also, after this update, in the game modes above 16 players I get exceedingly high pings to everyone ( its a peer to peer game). I have tried various things including portforwarding the warrock ports to the computer and router, tweaked my MTU on my computer however can't find out how to do it or even if it's possible on my Belkin 802.11g F5D7230uk4 router. I have made sure that War Rock and all its components are being allowed through the firewall, I even turned my norton 360 firewall off and just used the windows firewall which had all the ports and programs excepted on it. I am not sure what is causing this as it did not happen with 2mb internet but does with 20mb :S The only new addition to the hardware setup is a cable modem running in between my cable box and router instead of just the direct cable. I have been told that it could be "noise on the line" but I don't believe this is the problem. Any help on this subject would be greatly appreciated (including how to change the MTU on my specified router if it is possible to do so).