First let me say that I absolutely love this game. However I have one major issue that keeps coming up. After playing for awhile (multiplayer mostly) I can't quit the game. It just freezes after I hit the exit button. I've tried Ctrl-Alt-Del several times but it never works the game remains open. I also have tried exiting steam but encounter the same problem. This forces me to have to shut down my computer. Just wondering if anyone else has encountered this problem and can provide any help. Thank you in advance.