I made the pro subscription for a few days I can no longer set the 4k resolution,
althoug at home I have 50mbs with the ethernet cable and until a few days ago everything was fine,
now I can no longer activate the 4k nor the HDR with the Chromecast ultra It Is very frustrating,
I would like ti know why?
@Babaganuche7 has hit the problem on the head. There is now a way to change resolution for each device you use.
Rather than in the App, you need to change the resolution on the Chromecast.
Changing your resolution on a Chromecast Ultra device