"Loading..." slow when coming back to Channels on Apple TV

So when we are watching a strmlnk (in this case to Amazon Prime) series on Apple TV, we watch the episode then use the remote to go back to channels to mark it as watched or Trash it.

What's gotten annoying is that more than half the time, when we switch back to the Channels app (current Testflight build) from the Amazon Prime app - the app says "Loading..." with the spinning wheel for quite a long time. Sometimes it is instant, so I'm guessing this screen only occurs when the app has been swapped out by the OS or something like that. I wonder if this is a bug or something that could potentially be optimized?