When i alt tab to look to desktop while i play crysis 3, when i get to game again screen goes like this i don't know what to do it started to happen every time after latest nvidia patch it was happening sometimes before this patch but not often. It happened in BF3 too but one or two times i think. It doesn't appear something like this always sometimes there is pink stripes, sometimes screen becomes brighter than normal. i have gtx 680 4 gb. can someone help me pls.