I think all the ps4pro modes have unlocked framerate, so they should be able to do it with the framerate mode at least.I think it depends on whether said PS4 game has an uncapped frame rate mode? If it does, ps5 should technically brute Force it to 60fps.
If it has a capped frame rate as programmed by the devs, not even a quantum computer can brute Force to a higher frame rate as the max frame rate is essentially locked down by the game code itself.
And not only that, but faster loading times as well.