I have the 2012 rMBP 15". Watching any video full screen, every 15-20mins or so, I notice a screen flicker (couple of gray lines) on the top third of the screen. The flicker only lasts a second or so but it gets rather annoying. I had my screen replaced when I first got the computer, and got it replaced again, both due to Burn-in. I thought this was another screen problem, but I tried using firefox and safari and it seems to be a problem only with chrome, AND it only occurs when the video is full screen. Does anyone else have the same problem? My computer is still in Applecare, but it will be hard to replace the issue at the apple store since it occurs randomly. Should I just wait until the next chrome update?