Steam Deck and occasional issues

I just got back into the game, and first time playing on PC, specifically steam deck. Bought the Odysey.

I play on low settings, and I'm getting occasional freezes and speed ups.

Sometimes the game speeds up to I dunno 150% maybe, fixes itself after some time.

And sometimes I get stutter, but just the picture freezes, on the background the game plays normally. Meaning that after the picture unfreezes, I have moved forward as I have predicted. Both happening on foot and in ship.

Anyone have any idea what setting might fix this?