Game disconnected: client closed down connection. DURING GAME.

I had this same problem in the BF4 beta. It tells me "Game disconnected: client closed down connection." when it fails to join a server. It seems like I can join low population servers though (maybe 0-5 players). Anything above that number gives me the error. I know a lot of other people had this same problem in the beta but I never saw a good fix for it.

I play on the PC and I'm pretty sure I have all of my software updated. I've never had a network problem with any other games.

Any help would be appreciated.