I had this issue yesterday. Machine is fully updated. The problem was entirely reproducible: anytime a video or animated gif scrolled into view, I would get the issue with the changing hue of the screen. If I scrolled over them fast enough, I would also get screen shake and blanking. Then it went away: no idea why. It wasn't the auto-brightness, because I didn't touch it.
All was well. Until about an hour ago. The problem suddenly came back. Had made no changes at all to the machine. Exact same issue: a video or gif scrolls into view, and screen hue changes. Do it fast, screen shake and blanking.
What's more: I've now had a few instances where the screen blanks for no reason at all, outside of Edge. It's happened on the log-in screen, on an empty desktop. Those I cannot reproduce, and they worry me much more. I still think this is some sort of driver problem, but it concerns me since it went away and then came back.