So in russian version you can disable epileptic filter..

Originally Posted by ZaltysZ

Antiepyleptic filter eats about 10 fps on my system (i7 920, GTX470), however it causes awful jittery and stutters (looking around does not look smooth even at 50 FPS). Disabling the filter makes looking around smoother, but there is still huge problem with FPS and occasional freezes over the land.

same spec here.....the thing that bothers me is - nobody from dev team announced this before release...and as this anti epileptic filter makes the game (visually) different from russian version...so I will cancel my preorder....guy at getgames was wery helpfull and pro but we will see If I would get canceling order and refund.....I sucked once with ROF and their "optimisations"....that was enough...

sucks.....