According to feedback from Apple TV users on the Reddit community, Twitter social media and Apple support forums, there are issues when playing HDR content. The most frequent feedback from users is that the images are too dark or faded.
Apple TV should theoretically see more colorful colors when playing HDR content, with more even exposure of the dark areas (shadows) and light areas (highlights) of the subject.
However, Apple TV users have reported problems with HDR content playback at the end of the update, with errors in hue, color temperature, and even shades of blue, as well as some strange occurrences. Even after turning off color shifting and adjusting brightness and contrast, the problem persists.
Users have reported that it’s hard to see faces in HDR mode, and basic methods like unplugging and replacing HDMI cables don’t solve the problem. According to people on Apple’s support forums, changing from 4K HDR at 60Hz to 4K HDR at 30Hz solved the problem.