Running Channels directly on Sony X90J (Android TV) and have only just noticed when using Show Stats that 4K movies are always scaled to HD. They are also not listed as 4k files in their info in the Library (CC, 4K, Dolby Atmos etc). Native Resolution is 4k yet "Scaled Resolution 1920x1080" or lower
Is there a limitation in the TV app? No issues at all when using the app on AppleTV 4K.