I use nothing but 32 bit audio files and I can’t remember the last time Cubase crashed on me. It’s very rare and I’d bet a dollar to a pinch of donkey poo it’s probably down to something I’ve done on those rare occasions when it does happen. Occam’s Razor and all that. It might be wise to consider an alternative source for the cause your problem other than Cubase.
It’s a little early to say yet but since running 7.06 I haven’t even had the old “hang on exit” routine that some of us occasionally experience. That would be really cool if they’ve finally cured that old chestnut. Or do they even recognise it ? Not that it’s an actual “hang” since it generally shuts down if you wait it out,
Good luck! (not that superstition is likely to help)