Same for me. Got this game Thanksgiving 2017 with the PS4Pro SW bundle and had the issue on a Sony x900E. Had the issue until I stopped paying in April 2018.
Just picked the game back up and now have a Sony x900F and a different PS4 Pro (Spider-Man). Same issue of over exposed whites on the splash screen and menus. During the game there is just this like coating on everything making it look a little washed out. I wouldn’t say it’s terrible and kills the gameplay, it’s just noticeable and not crisp.
I have the HDR-10 peak brightness at 14% and other brightness at 20%.
Like others have said...don’t have this issue with any other HDR game on the PS4 Pro.
Thanks.