From the time Disney+ Hotstar has introduced 4K and DV for Android TV in India, I've always experienced that those particular titles never actually play in the 4K/DV till some time period. Even when it eventually does after some days, the playback suffers. Finally, after a week or so, they tend to play fine.
For example, the recently released Wanda Vision though says DV, doesn't play in DV.
I want to know if this experience is specific to the OnePlus TVs or is faced by other Android TV Users too.
PS: The present APK version is 4.1.7.
Your TV is atleast able to open Hotstar. My 2 days old Bravia can't even open Hotstar or other apps.