stibs73

I’ve definitely got it set to Dolby Vision in the settings on Atv 4k (2021 box). And showing in the LG c9 picture settings as Dolby vision too. Sent from my iPhone using Tapatalk Pro

I had exactly the same issue with the update. Dolby vision flashing on and off using Apple TV 4K box. Restarted the Apple TV box and all issues seem to be fixed hope this helps.