Quicktime video playback degradation on OS X El Capitan
I'm having problems playing back h.264 video in Quicktime on El Capitan. The video becomes degraded when in full screen mode and no other overlay UI elements are present. Moving the cursor to bring up the playback overlay immediately corrects the video but when it fades away, it reverts back to a corrupted state. This only appears to happen when Quicktime is in full screen mode. Windowed playback remains uncorrupted. I have a suspicion that it has something to do with the Intel graphics drivers in El Capitan on my 13" MacBook Pro with Retina Display (Early 2013). On a friends 15" MacBook Pro with Retina Display (Mid-2012) which features a discrete Nvidia GPU alongside the same Intel HD 4000 integrated graphics as my 13", there is no playback issues whatsoever. Yosemite did not present this issue, it seems to be isolated to El Capitan. Have tested this with several different files including 1080p and 4K captures from my iPhone 6s, and 1080p h.264 video captured from my Nikon D600 dSLR.
Exact specs:
OS X 10.11 build 15A284
MacBook Pro (Retina, 13-inch, Early 2013)
2.6 GHz Intel Core i5
8 GB 1600 MHz DDR3
Intel HD Graphics 4000
250 GB SSD
I've attached 2 photos of the issue. I've also submitted a bug report to Apple to see if I can resolve it directly. Has anyone else experienced this same problem?
MacBook Pro with Retina display, OS X El Capitan (10.11), null