This of course could be because the AppleTV is no longer upscaling, so I tried to think of some other test. In both cases the info pull down in the player only displays the HD badge even though the played stream looks much better with the max resolution set to 4K.

When I switch the max resolution back to 4K the 4K label (or the Dolby Vision label) returns on the title page. So I switched the max resolution on the AppleTV to 1080p and when I did that the TV of course only reports 1080p, but the Netfilx app shows only an HD badge on the title page of a 4K title. Because the AppleTV upscales to 4K, my TV always reports 4K even if it is a title that is only available in 1080p. I finally started testing a theory that the AppleTV is actually playing the 4K stream, just the badge isn't right because the stream still looked good to me and because the TV flashes up either the Dolby Vision or HDR label when the stream starts from Netflix or Prime even though the info pulldown only shows HD and no mention of HDR or DV. Since then I have played with all of the settings on the AppleTV to get this 'fixed' but with no positive results. I went to turn on the subtitles via the pull down menu so that I could play with the new 'circular scrubbing' by rewinding and I saw that there was just an HD badge in the info pane instead of the Dolby Vision badge I was expecting. Monday evening I went to watch the last episode of 'Jupiter's Legacy' on Netflix and one screen had some pretty obscure dialog. I swapped in the new AppleTV 4K on my LG OLED for the previous gen on Friday, but I didn't notice the issue right away because I only watched AppleTV+, iTunes purchased content and Disney+ until Monday. I have been dealing with this issue since Monday.

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