Certainly some digital content doesn’t look great. I’ll try to check the scene on my end later today. It's also worthwhile to try changing the HDMI cord, port, hardwiring if you are on ethernet, and seeing if there is something clogging your bandwidth (or your internet provider is throttling you). If the 4K titles are MA, you might want to check them out on various apps to see if something changes. My Apple TV is hardwired if it matters with 100 down. I haven't noticed any problems on the last few 4K movies with DV that I have watched on itunes, but I can't say I was paying attention to every last pixel either (at the same time, nothing stood out to me as 'bad' when watching things recently). I'm getting an OLED soon, so hopefully it will handle itunes 4k DV/HDR better

I'm wondering if this is an issue with my tv (although it doesn't happen with physical 4ks), or is it something that I have to get used to with digital movies (I hope not) I noticed that the dark scenes in HDR movies (specially recent movies) are a disaster on Apple TV, compression artifacts, etc. Not sure this is the right thread to ask about this.

Steam apple tv 4k