This Apple TV 4K YouTube bug drove me crazy — and I just fixed it

Jan 20, 2023
You don’t need to disable Match Dynamic Range or Match Frame Rate. (YouTube actually disabled the frame rate matching function)
Just set the Apple TV’s video settings to 4KSDR and your issue with YouTube is resolved without forcing Dolby Vision on everything.
The only time you may ever have it again is when you play a video with HDR which are mostly few and far between unless you specifically go searching for them.