I have problem that my animations have some fast distortions. They occurs when I use hw skinning (vertex, pixel shaders) or software skinning. However those distortions doesn't occur with blender in which I did animation and assimpViewer. So if the problem doesn't occur with assimpViewer it means that for sure my model was exported from blender to x file in OK way. Here is a movie in slow motion which demonstrate the problem (unfortunately there is advertisement which lasts 30 s before my movie):
You see like legs/arms sometimes have some unnatural jums/distortions, I don't know how to name it.
Do You know what might be the reason of the distortions? Might be this problem related to some I don't now - not synchronized screen frequency with something? Or maybe somehwere calculations are wrong, however my vertex shader is acc. to some tutorials. I just multiply vertex position with Final matrices and weights. It should be OK.
Thanks in advance for information.