Thanks for the suggestion. KSPlayer is actually something we looked into, alongside other options.
We are actively working on this, and started internal testing for some fixes related to the thermal throttling issues that have been affecting some use cases. We’re also looking at how these changes potentially improve audio issues.
No ETA (yet) on when we’ll start rolling out to beta users, but I’m hoping is soon! We have been putting our Apple TVs through literal hell 
and the results are promising.
Once this is out, if there are still AirPlay and/or audio sync issues in the wild, we’ll count on this amazing group’s feedback and dedication to help us investigate those as well. 
