Lvl 15 unplayable………

Any one else have lvl 15 waystones unplayable due to it freezing and stuttering due to the amount of mobs on screen, my connection is over 800mbs so I doubt it’s that and running lvl 10 stones is fine but lvl 15 is impossible with how bad it is, are other people having the same issue, it’s a brand new ps5 so it’s not full up or on its last legs and I have tried altering the graphic settings also to no joy, cherry on the cake is I loaded 50£ for extra stash tabs because of the loot drops on 15/16