I've had the same experience myself and couldn't really put my finger on it. Vcache is really working its magic i supposeIs it possible for games to feel smoother whilst fps is around the same or only a few more?
That seems to be the case for me going 5800X to 5800X3D.
Sort of similar going vsync to gsync. Fps can be the same but there’s other technology making it smoother.
Warzone 2 for example, looking out a window with a scope can drop fps to 70s or 80s in some areas but it still feels fine. 5800X it wasnt too bad as fos dropped, just not AS smooth. The best explanation can be 30fps vsync vs 30fps gsync. Gsync monitor was like magic.