Apple TV Stutters
For the last several weeks my AppleTV's performance has been downgrading. I get little artifacts on the screen, such as small bright spots that are intermittent. Then it will blank the screen for a millisecond, and repeat the last couple seconds of what I'm watching. Once this starts happening, it gets worse and worse until it's nearly unwatchable. YouTubeTV will display it's notice about problems, with a link to upload a problem ID to them. But it doesn't just happen with YouTubeTV, it also happens with Hulu and other apps such as HBOMax.
I've restarted the AppleTV box several times, and the TV as well, and also my router. I tested internet speed, and it's very high. Last night I reset it to factory startup and updated all the software, but it is still happening. I used my iPad last night to AirPlay video to it, but I still get the same problem.
IT feels to me as though the hardware is failing somehow.
Any ideas?
Apple TV 4K, tvOS 15