My Apple TV 4K 128G has "glitches" where the television goes black, then returns to normal.

Purchased a new 128Gb Apple TV 4K the day after Thanksgiving (29 November this year), and after setting it up and downloading the latest software patch, the picture started cutting out/going black for a second or two before the picture returns.

I tried everything I could think of (checking software, changing picture resolution, etc.) to no avail, so I finally did a full reboot of the Apple TV. That seemed to work until today (December 6th) where it started doing it again. It doesn't do it constantly, but several times in a row, then the picture is stable again. Several minutes later it will cut out again, then the picture returns.

The reason I know it's my Apple TV 4K is because I also have an OTA DVR and a Blueray player connected to my television, and neither has that issue. It's only when I'm using the Apple TV 4K box.

Checked the software again, but it's still up to date. Thoughts?