I have the identical picture settings for the built in Google TV and for my Apple TV on my new Sony Bravia. For whatever reason, the picture quality on google tv is definitely better than the Apple TV. For instance, when watching the World Series on the Fox Sports app, the white jerseys are in great detail in the Bravia/google side. On the Apple TV, the white jerseys are completely washed out. I’ve got a brand new hdmi 2.1 chord from monoprice so I don’t think that’s the problem. Also I have the external hdmi for tv set to enhanced, which is for hdmi 2.1 on the Sony tv. Anybody think of anything I might be missing?
I got much better picture quality on my Bravia when I turned off Dolby Vision and set format to 4K SDR with match frame rate and dynamic range on Apple TV.