I have the latest Apple TV hardware. I have a 4K HDR TV. I have a wired connection to 1Gbps fiber. I subscribe to YouTube TV, and the BEST picture quality I can get is a pretty pixel-key 720p.
I stumbled around other subreddits, asked “which device has the best picture quality for YouTube TV. Anyway, the answer was Roku, so I ordered their 4K box for $ 80.
Surprise surprise, it’s exactly the same. So maybe it’s just YouTube TV? I do not have quality issues on Netflix or Disney +. Now I wonder if I should switch to Sling? Hulu with Live TV? Entrance appreciated!