OK. it happened again. But it has nothing to do with the savegame. As soon as I set "Character Reflections" to false the game freezes. (Just as if an autostart event was running). It works again when it is set to true.
Sorry for the delay (my cpu cooler died and my gpu also kinda went oof)
Anyway I've released an update that should address the problem!
Thanks for your help and patience!
https://anisoft.itch.io/mzplus-prime-parallax/devlog/185086/update-106