I have recently bought the top model 13 inch late 2013 macbook pro retina. It has 2.6ghz i5 8gb of ram and 500gb SSD. I expected that this would be able to run 1080p videos on youtube on full screen without slow down. 720p works fine. Is anyone else having this problem do i need to install some certain type of driver to help performance. I have div x, flash player installed. Thanks.