I've found that the game is ironically more stable on the web version. To be more specific, while playing on the web version I noticed that as the game progress the sound gets more and more bitcrushed. So I tried a local version, and was able to play through three witches before the game white-screened, and crashed (and I was still experiencing some bit-crushed sfx issues). Yeah it's consistently white-screening on me, I can't play past the yellow-potion witch.