Hey hey Macrumors. Just installed El Capitan last night and i am noticin a lot of pixelated square thingy on my 15 inch retina macbook pro's screen. I am attaching some images below. It doesnt look like it is affecting my hardware, because if i clicked over at the window and move it around the screen, the pixelated squares move with the window. The apps i currently am using the most are safari, itunes, steam (occasional dota2), pages, and lightroom. I tried apple support and they recommended nvram reset. Did that and issue still persists. Any ideas or possible fix?