"While there are a number of 8K TVs with Android TV support, standard Android TV boxes were capped at 4K when streaming YouTube content — even if higher resolution videos are available on the platform.
8K video streaming support is now rolling out in a limited fashion for Android TV with YouTube for Android TV version 2.12.08 according to guys over at Android Police . As we have said, this is a very limited rollout as you’ll need to be running Android 10 and above to even see the option."
" If you don’t have an 8K TV you can still benefit from downscaling, when watching such high-resolution content on lower-resolution displays. That said, streaming a ton of 8K YouTube videos to your Android TV set-top boxes could really hammer your data cap — provided you have a cap. Let’s hope that H.266 video encoding comes soon, as the enhanced bitrate-to-quality benefits would really help when consuming such high-resolution content online. "
https://9to5google.com/2020/11/26/android-tv-8k-youtube-limited/
Ok, now how about enabling HDR and Dolby for an App that you want us to pay 10$+ a month for, Google ?!
Sorry, just frustrated with this damn app, that works best on Windows than it does on any other platform. :(