A few days ago I finally bit the bullet and upgraded to Big Sur (from Mojave). Since then, my Apple TV experience has been … poor.
I should start by saying that I do most of my viewing over Home Sharing. (I prefer to download videos once, to my iMac, and then use Home Sharing to view on my other devices.) Once I figured out how to turn on Home Sharing in Big Sur, it seemed like everything was fine, Apple TV-wise. Not so.
Just to be clear, both iMac and Apple TV are fully up-to-date, on the latest MacOS and tvOS respectively.
What happens is this: when I open the Computer icon on the Apple TV, and enter the home sharing option, I used to see posters or poster frames for all the movies and TV programs. Now, everything has a blank icon.
If I try to play a TV program, it seems OK at first…but after a little while the audio quality degrades, starting to get a bit patchy, and the picture and audio slip further and further out of sync.
I know this isn’t a problem with the downloaded TV program files, because if I exit back to the menu half-way through a program, and then play the program again, resuming from where I left off, video and audio are back in sync…for a little while. But then, again, they gradually drift out of sync again.
Any thoughts / suggestions?