I have had a problem that is really getting annoying. After a game that goes for about 15 minutes, when it finishes it says, "you have been disconnected from the server". i have basically had enough of it if you know what i mean.

I have recemtly reformatted my pc, not for the reason of the game and it was doing it before then, and it is still doing it now. so if there is anything that can be done please help me