Test Site, Day, Overcast. At least the scenery and tank both look dull and dark as they should. But in what universe is this an overcast day? Looks more like a thunderstorm is going to happen. I live in the UK, I would know. Its been overcast all day and it didn’t look as grungy as this.
I cannot see a single issue with the variance in these screenshots.
Apart from “Shadows are dark” and “Clouds block light”, your black points are about the same and the difference in contrast can easily be tweaked with the polynom filter.
Its randomly fixed, I played the game press windows typed on discord went back and it fixed. idk what was the problem but likely the game was bugged for me. And now its wrong again something is bugged.
TBH I do not play with HDR (I alt-tab a lot and HDR create a 1-2sec. delay on win 10 when you do that) but I just checked and it looks good for me (both on LG 27GL850 - IPS, and on my LG OLED TV).
I know this is little bit late… but, what kind of monitor/screen/TV you are using? Have you tried changing/disabling Auto HDR, RtX HDR settings? You should also check if your ‘set’ uses Dynamic tone mapping (common for TV’s), and try to see if you can disable it.
There is multiple reasons why colors might look washed out, or any other issues while playing HDR games.