Try Performance Mode in HoT’s settings. My first time I made it to 30 minutes, my game crashed. I turned on Performance Mode, and it’s been running just fine ever since. With the retro PC game vibe they’re going for, Performance Mode arguably adds to the experience!

That said, your game crashes when you’re five minutes into a run? I did hear that the game can have crashing issues on Steam Deck, but that’s a little extreme. Not sure if Performance Mode will fix that.