Graphic lag, sometimes FPS < 30

Hello,

when playing couch coop, we have a group of a warrior and sorceress.

When we get into a fight with a couple of mobs and the sorc starts to cast "flamwalls" + "raging spirits" out of it + ice balls with multiple projectiles, the game really, really, REALLY start to lag.

We've tried to change graphics but this didn't help + afterwards the graphics looked rubbish.

We are playing on a normal PS5, not the new enhanced version of PS5.

Maybe the game would need more graphic adjustments or recommendation for graphic settings by GGG.