New user with 2 issues :)

Running on the latest Apple TV 4K hardware tvOS 26.5. I have yet to found a DV mkv file that play in Dolby vision . They all seem to fail back in hdr. What DV profile are supported ?

Accessing the customize section from setting screen ( on tvOS) makes the app freeze . I can access it from iOS but not tvOS . This prevent me from customizing the Home Screen settings . I have tried that on 3 Apple TV with the same result . Is that a know issue ?