I purchased the game recently and completed it. It's a great game, but there are some bugs, probably because of the new systems like windowns 11. I remember playing this game a long time ago on windoiows 7 I think, and I don't remember having any problems, but this time the animations sometimes slow down. Maybe it can be fixed by changing the settings.

It's because FPS drop on newer systems.


Deselecting shadows in the launcher solve the problem, OR from the game's files run the game only with Demonstone.exe! But not through the launcher, this cause the FPS Drop! (demonlaunch.exe)

Oh and don't alt+tab, this will cause stuck at 30 FPS!