It's not just you. I've noticed intermittent micro stuttering on the PS5 as well a couple days ago. I couldn't replicate it but restarting the game fixed it but sometimes it would be back. It's not a drop in FPS but only micro stuttering by which I mean that the game was being jittery and not fluid like I'm used to. Never experienced this before. The menu and cursor were also micro stuttering as if there's some sort of memory leak taking place. It hasn't happened for the past couple days now so I'm not sure what's going on with the game.