On Yosemite Public Beta 3 using Safari, when maximizing YouTube to full screen, the transition/animation is choppy. Anyone else experience this or know of a way to make it smoother? All other animations like Mission Control/Expose/Desktop Swiping/App Maximizing all look good. Only YouTube full screen is choppy. This is on my Late 2013 Retina MBP15. It should have enough power to full screen YouTube without issue. iGPU or dGPU doesn't matter. Don't recall if YouTube is running the HTML5 or Flash version of YouTube if that matters. I will check when I get back to the computer later. Thanks.