So I built my PC a month ago. It has an Asus GTX 670 GPU, Sabertooth Z77 Motherboard and a i7 3770k CPU. Everytime i stream or watch downloaded videos in fullscreen, there is a choppy line that runs through the middle of them. Nothing like this happens when I play Diablo 3 or other things, just videos. Ive tried reinstalling the graphics driver and I don;t know what else to do from there. It's really annoying!! Any help is appreciated!!