Why 24fps is not enough for HDR movies

[Rasmus Larsen]

If you have considered updating your Apple TV 4K to the tvOS 14 public beta be aware that Dolby Atmos is currently broken system-level, so it affects Atmos from all services.

Just a friendly warning. Wait until a later public beta. It should arrive soon.

[BidiMc]

And after all this time, Atmos is still broken. Or, let's say, broken again.
It has a lot of stuttering and pauzes. Netflix app the most severe.
Other apps as well.
AppleTV 4K gen 1 was looking to be the fallback but, with the latest 15.4 firmware Apple managed to break that as well.