After latest update graphics became a lot nicer on Apple TV 4k, thank you for that, shadows bring depth so well! Tho I noticed that fan on my ATV also started to ramp up and some menus started to lag after any long ride (for instance in spindown menu app stucks for up to 10 seconds, which never happened before, I didn’t even thought that fan exists in ATV lol). Any experienced Apple user knows that if fan ramps up, then it is already overheating. And it is less than 20ºC in my apartment.
Maybe a tiny bit of tweaking could somehow reduce the load on ATV? As a photographer I can say that shadows play a really huge role in perception so those must stay, but for instance that glowing (bloom?) effect not important at all and even sometimes distract with how it overlays some objects it physically shouldn’t, and as far as I know any HDR or Bloom effects do hardly affect performance.