Well it could come from a lot of things.
Are you using any custom/HD textures?
Have you tried different Direct3D API?
Do you have any AA or AF options enabled?
IMO you should post here the crash details that you can find in windows event viewer, this will help narrowing your issue.
That's an awesome news , thank you (again) Ephinea staff for all your hard work.
I am a bit curious though, does sonic doll come in in a set color or is it influenced by the baby mag color?
I'll do the screenshots asap.