Choppy Fullscreen Flash or HTML5 video playback in Chrome on Mac Pro Does anyone know how I can solve this annoying issue of fullscreen video in Chrome displaying very choppy and jumpy?  It's unwatchable.  I've had the problem in Chrome ever since I got this 2014 Mac Pro.  It's not the Chrome pepper flash plugin because I've disabled that and it's no different, and besides - it behaves the same with YouTube's HTML5 video player.

I've tried disabling all plugins, disabling all extensions, and it still is the same.

Apple won't help as fullscreen video works beautifully in Safari - even 4K Youtube video.  The problem exists with Youtube, Vimeo, etc.  I have noticed that some news websites videos play fine when fullscreen if the transition to go fullscreen doesn't make the screen blink - like it's trying to change the resolution (like is the case when youtube/vimeo videos go fullscreen, there is a slight blink and delay when going to fullscreen mode). If I try going fullscreen with Facebook videos - the sound plays but the image is black.

Please help - I have no idea what to do. The behaviour is the same in Mavericks and Yosemite.
Try disabling Hardware Acceleration...

Control-click the Flash application or video during playback.
From the context menu, select Settings.
The Display panel is the first panel shown.
Deselect the Enable Hardware Acceleration option, and then click Close.