Hey All I decided to start a new thread to determine whether anyone else who watches movies on iTunes are experiencing any issues in terms of lag and flickering? I have posted in a pervious thread http://forums.macrumors.com/showthread.php?p=18237897#post18237897 my experiences with iTunes when watching a movie in full screen. For those that cannot be bothered to read the thread heres a small video clip of the issue that has prolonged me since purchase. http://s1117.photobucket.com/user/mrmarts/story/22475#media-player. I have reported it to Apple and they are further investigating the matter. In the meantime i would like to hear others opinions about their experience with iTunes on their late 2013 (13" or 15") macbook retina to isolate whether it is a software or hardware issue.