Fallout 3 low FPS EPIC Version

Hey Guys,

I got Fallout 3 from an Epic store giveaway some time ago. I installed it with heroic launcher. The game runs, but only with around 30-45 fps depending on the location. The thing is, the cpu and gpu are below 30% load.

I didn't set any fps limit on the deck settings (its at 90). I'm using a 512G OLED deck and the game is installed on the SSD.

Any help is appreciated!