Game Screen Blacking Out

[dragonslayer667]

so i dont know what does it but eversince todays patch i'll be playing and all of a sudden pressing a button will blackout the screen it keeps runnign but the only way to fix it is hitting esc or alt+enter. esc only fixes the problem till i try to press another button then blacksout again. and alt+enter takes it to windowed mode where it works fine aslong as i dont press alt+enter again taking it back to full screen(causeing button presses to blackout the screen again. in order to play in fullscreen mode again i have to restart the game.