I own grid auto sport, dirt 3 and dirt showdown and love every single one of them..apart from they all have the same stuttering. The screen freezes for a second or two but the game continues to play while it's froze. I have a great rig so i know it's not the problem..every other game i have works perfectly. For the sake of it though my specs are i5-4690k 8gb ram gtx 980 All updates installed, newest drivers, even tried some older ones. Also i recently re-formatted my pc and the problem still persists.