(PS5) Game crashes multiple times in duo online lobby with a friend

Hi - my game crashes on PS5 multiple times when i play online with a friend.
It is one crash in between 1 Minute to two hours of what i expierinced so far. Had like 20+ or something. It is not specified to a certain move or action i believe since i had 1 only running around and 1 only standing around while AFK.
Had this since mid of December by the way.

Only had these crashes in online lobby - when playing solo never got this problem.

For Info: playing witch in perma Demonform.

with every game crash i also uploaded bug report videos via the intern PS5 function - but i dont know if you even get those reports or only sony gets them.

Please fix this . Just wanna game with my friend and finish Cruel Gamemode for Endgame.