I've tried RTings setting and why were terrible for me.
The third to last post here https://community.playstation.com/content/pdc/us/en_US/pdc-communities/support/Consoles-Peripherals.topic.html/ps4_pro_hdr_issueso-WVef.html are producing good results for me right now in Uncharted Lost Legacy. Will try some other games later, the game's starting to get interesting.
4 ≈ One