blurred vertical line that moves

[HCoNDe]

i am getting an annoying blurred line that goes vertical across my screen with amnesia and penumbra which stops when i put vsync on ive seen other people able to play this game without vsync like my freind who has a nvidia 550ti. i can play games like skyrim and not get this whys this game different and whats going on

happened to me yesterday, solve it by changing the frequency of the monitor 60 to 75

http://frictionalgames.com/forum/thread-11936.html