Besides boosted framerate, Only real advantage I could see in the PC version, would be to mod in 2B.
Yeah i don't see much to gain here, if you've alreay played it on PS4 pro.
Hopefully it being Decima like Death Stranding, will mean modding one will help modding with the other.
Now Bloodborne would've been a very different story.
Garbage performance AND garbage IQ, and no Pro Patch.