Thank god the demo performance only applied to the demo. This game runs fantastic. I have no issues running the game @ 1920x1080, maxed, AA enabled, Physx High, sound quality high, 4xaa SS trans. & maintaining the 60 fps vsync cap. It drops occasionally but it seems to be when areas are loading. I'm only on chapter 3 so things could change later in the game but so far so good.