unable to stream video from my personal library with AppleTV 4K using tvOS14.3

When I updated to tvOS14.3 on my AppleTV 4K box (via auto install) I could no longer steam movies from my personal movie library. My movies and TV Shows are installed on a RAID 1 drive linked by the TV app. I am running MacOS 10.15.7. I got may strange visual problems such as black screen, spinning wheel followed by black screen, spinning wheel followed by a timeline bar that doesn't progress, a timeline bar with a blank box at zero, a timeline bar followed by blank screen. A few videos actually did play but my remote was useless because I could not pause the movie. The Menu button would allow me to get back to the main screen but I was unable to get back to the movie to start it again.

As for streaming 4K content from my purchased videos from Apple, no problem. I installed a 4th gen Apple box running tvOS14.2 and was able to stream my library. In fact I am able to steam videos from my personal TVShows library, Amazon Prime, Apple Movies via my 4K box. I have tried all sorts of troubleshooting and did find that I can stream a movie from my personal library to my 4K box if I start the movie from my iMac but again I cannot control it with my remote.

I can't help wonder if installing Big Sur would resolve the streaming issue with iOS14.3. I have total success streaming my personal library with Catalina and tvOS14.2 via my 4th and 5th gen boxes. My problem suggests a software problem but what? Would installing Big Sur and 14.3 be the solution?