This is how no vertical sync looks like. Also hardware drawed overlay surfaces. Ignore this, it happen frequenly for video software as they using overlay to increase performance a bit.
From video i guess it's related to reading from hdd. Turn off antivirus and check if at those lags led of hdd activity is blinking. Also this can be wrong multithreading code (as deus ex have same shit as skyrim), run the game with my patch for it and/or in application manager force to it single core only.
thanks for you help but I already uninstalled few days ago antivirus,HDD seems working good,no difference between switching 1 or 4 cores ,my main problem is that Skyrim and Deus EX are not exceptional games but all games in general doing this double image effect if my FPS are locked below 50 ,here is another game Alan Wake http://www.mediafire.com/?nhoa4r5b5skfntg
and I can keep recording every game I have ,they all stutters at locked 30fps same way