I have a new 2017 27-inch iMac (i7, 4.2 Ghz, 40GB Ram, 1TB SSD, Radeon Pro 580 8192 MB). I witnessed some flickering this morning after it woke from sleep. I picked up my phone and started recording it and posted it to YouTube. The link is
. Anyone else seeing this? I'm thinking it's a fluke thing, but want to be sure. I've only witnessed it the one time and a restart cleared it up.