Is VAC’s full name 'Valve Allowed Cheating'? Why is it completely useless when I report a cheater? VAC does nothing at all. The game’s optimization is also terrible. I can play CS:GO very smoothly, but CS2 is completely unplayable for me. The in-game environment is another issue—every match I play, I run into several toxic players who verbally attack others. The matchmaking system in this game is also very problematic. In every match, there are only one or two teammates who can play normally, while the other teammates either don't know how to play or don't use their microphones.