This video compares PSSR1 to PSSR2 when it comes to Final Fantasy VII Rebirth on the PlayStation 5 Pro.
To activate PSSR2 for Rebirth, turn on the Enhance PSSR Image Quality setting on the system menus of the PS5 Pro console. Afterwards, set Optimization to Versatility in the Graphics menu in the game.
You can check out the comparison below:
PSSR2 looks a bit sharper than PSSR1, especially if you look closely at the environment.
Final Fantasy VII Rebirth is expected to get a new patch in the future for the PlayStation 5, adding additional enhancements such as improved lighting.