even compared to ps4 or other consoles the ps3’s 30fps is responsive and fluid. I compared gta5 on ps3 and ps4 and the game had better input lag and the moving image didn’t look like jerky shit like on ps4. I think ps3 has a special way of handling frame pacing
I’m going to assume that you were younger when you completed it on PS3 and had less exposure to higher frame rates. Having said that, some games when they moved to PS4 may have upped the resolution or detail just a bit too much and caused frame rate drops which will be a developer decision and not a platform thing.