Ps5 buggy/laggy

I have a realm with mods and I tried to load in like I can’t even walk it’s literally unplayable on PS5 version. . Even the Nintendo switch, I can’t even load into it whatsoever always says there’s an error. Anyway I was just curious what would happen if I were to just make a new world, guess what the same thing I can’t walk without it being so damn buggy and super laggy. I’d would walk and stop, walk and stop.  So i installed the ps4 version back and it was totally fine. I was able to walk continuously and play the game. Just want y’all to know. Thank you for this wonderful game though