I just finished my no box run of Resident Evil 3 Remake downsampled from 6K [3840x2160 with 150% render res]@30hz, holy shazzbo its beautiful, can't even keep 30 fps in cutscenes when the camera goes really close a characters face but thats not too often and when I'm at 4K@60hz it drops to 30 in these same scenes so I just put up with it.
The NEST 2 lab looks so freaking "clean", apart from all the blood ofc.
Reply to bold text: The difference between X1 and X1E is more depth and better motion interpolation from my experience, when you go up to X1U the main difference is the detail retrieval and colour reproduction, its really brings out the fine detail and makes things look more accurate, I have this clip of a 4K HDR clip which has a closeup of a wildcat of some sort and its looks really nice on the AG8 (which has X1E) but when you see it next to AG9 [With X1U] you realise the nose wasn't really the right colour and was too grey and its like subtly pink on the AG9.
Most of the Sony demos [and now Samsung too] comes from this couple who shoots around the world in 8K -
https://www.youtube.com/channel/UCYq-iAOSZBvoUxvfzwKIZWA - prob the best collection of 8K vids on youtube. A lot are 60fps as well so you need a GTX 1080ti/1650/1660 or RTX 20XX to decode them on the GPU, because they might be a bit much for old CPUs. Better to watch it on your TV's internal youtube app so you can get HDR without hassle. The part I was referring to above is at 52 seconds.