Happens to me too, feels really off. No idea why is that, I doubt they would have released it like that so it's probably a bug on our side?+1
But as a side note, the animations seem to disappear in frames every now and then, does anyone know if this is a universal issue?
Machine translation for Frostia version 1.0.2
Animated live2D scenes might not work with old saves. You need to load your old-save then save it again using the new game version. The title of the new save should change to "Magical Fighting Princess Frostia_1.0.2" on the loading page.