..it worked for me and some friend in ukraine
:P
IT's A V SYNC problem /bug
>>In game turn v sync on then off(i usually have in game off but nvidia control panel on) that's all you need to do, toggle it a few times and there it is, regular monitor settings.
this solution was found in one of two current threads made about this same problem on the steam forum /crysis section.
The bug makes my monitor go at 50MHz, but it's a 60MHz monitor and is always at 60MHz.
*copied from other thread.
SP averaging 45FPS.