Evenflow80,
I'm sorry to hear the issues you've been experiencing. That sucks. We all just want to be able to sit down, and enjoy whatever we are watching or playing on our new TV.
I have a PS4 PRO and I am also playing Ghost of Tsushima. I got this TV a couple months ago, to replace my old Sony LCD TV. I've gotten to play a few other PS4 games. Overall I really like how games look and move on it. Especially games in HDR.
I've looked at your map video and wow. That does look annoying. But I'm not experiencing that in GOT with my settings. Here they are in several screenshots showing several of my settings. Maybe using those settings will help improve how it looks in map mode with those issues?
I did experiment with a few settings to try to replicate what you are seeing on your setup.
Switching from HDR to SDR in GOT seemed to make map movement look worse. It looked more like your video.
Switching Performance in GOT from Better Frame Rate to Higher Resolution also seemed to make map movement look worse. It looked more like your video.
I prefer to play games in HDR with the Cinema Home preset. When I switched it from that to the Game preset in HDR then that also seemed to make map movement look worse.
I also sort of recall that for PS4 PRO games, that some games will give you an option between picking a higher frame rate, or higher resolution. When I've tried out both in a game like Nioh and Nioh 2, I prefer the higher frame rate for this type of action game. This was on my old Sony as well as on my LG CX.
Also,
It's the OLED's ability to have perfect black levels, that really makes the colors pop in HDR. Due to the enhanced contrast. As in, the OLED can I have the black part of the image off. Like how the full moon in GOT is almost too bright to look at in the dark night when it's in HDR? Pretty cool huh? Though you do need your viewing room to be sufficiently dark enough to really enjoy that. If your room is too bright, like from the sun or windows, then it getting a LCD that can be brighter might be an option.