I've searched around quite a bit and found nothing helpful so don't tell me to use the search.
Seemingly at random, I suddenly couldn't join any multiplayer games and there has been no hint as to why. The log says "Joining battle ######" over and over again and nothing more. Debugging was already set to false. I tried restarting the lobby as true and false with no apparent change.
In-game, text becomes unreadable after a few seconds to a few minutes. It just happens whenever. I can't find a trustable source for my drivers so I can't try earlier ones or even see if mine or out of date. I'm using a laptop with a windows 7.