Game crashes ps5 randomly

I play any other game fine, overwatch,baldurs gate - no crashes. I boot up marathon, and it'll crash randomly. Could be within 20 minutes, 30,40 and hour or 2. Its just completely SHUTS DOWN my whole ps5. And then it takes a couple minutes for my ps5 to boot up. Jist straight up black screen when it crashes. No clue what it is