Hey there! Sorry for your crash, although we're glad it's just because you're having so much fun lol.
There are so many assets in the game that doing chapter preloading and playing for a long time can basically cause a memory overflow. I've yet to figure out how to make the engine purge memory mid-game to solve this problem, but if you restart with episode preloading (use Episode Select as needed), then you should be able to continue. There is also a way to manually purge the memory - I can link you to it on our discord if you hop over there.