Hi guys, I’m running AE CC2017 on a iMac Retina 5k OSX Sierra, I also have many issue with the previews that I solved minimising the Render Queue tab at the bottom of the screen, see the attachment.
I can’t find the post where I read about this solution, the guy was saying that the problem is related to OSX that since El Capitan is refreshing constantly the panels, or something like that. I had the same issue with CC2015.
Since I did that it works perfectly on both my iMac and Macbook Pro late 2014 (OXS Sierra).
10772_screenshot20161109at09.43.18.png.zip