IF you try to play with HDR on you will see that is broken us♥♥♥♥ , saturation is 0 with no colors , and low light.
All you need to do to fix this problem is to put -d3d12 command in launch options from steam properties and you will have the proper HDR same as on console's.
And men it's look GRATE on a OLED monitor ( alienware ultrawide with pick 1000nits )
I hope I could help you with this HDR problmen. ENJOY :)