Winlator is very fragile and unstable with some games or phones. Try different versions of Winlator with latest plugins (and try different ones). Also make sure you copy game to C: or E: drive inside Winlator before running. Playing directly from D: drive (downloads folder) is super slow.
For more info check my full guide that i made for Imouto Fantasy back then. It should have useful info even if its not up to date right now. (I keep forgetting to update, sorry)
https://f95zone.to/threads/living-w...ntasy-v2-0-0-dlc-inusuku.104365/post-14755064