Mid-game crashes

[Cheezyshooter]

I guess my problem isn't as bad as others, but nevertheless I also have a problem. I can run the game, play multiplayer, but in the middle of multiplayer, I crash at random. It says my Directx11 has stopped working... Well if it works to begin with, why does it crash in the middle of a match lol? Also I can't get pass the damn first level of Singleplayer because as soon as I go through the damn door in that house in the beginning, I also get the damn Directx11 error. I honestly don't know how to fix this crap.