I'm playing on a gaming laptop. Have a gtx 260M. Just updated my driver. I can play Skyrim just fine with absolutly no problems on highest settings. But while playing Diablo I will just randomly have my fps slow to a crawl for no reason. Even while in camp. I will be fine fighting a crowd of monsters then the next minute it will slow. It will be fine for about 5-10 mins then lag for about 1-2 mins, regardless of what I'm doing on screen. changing my graphics settings has had no effect. Also tried turning on vsync, again no help. Any ideas what this could be or how to fix this?