This problem drove me crazy some years ago, back then I had a different notebook and for years I could not get vertex (!) animation to work:
Basically, if you have two of the same models, and you can see both of them on the screen at the same time, then their [...] animations will not show properly
I was not the only one, for some people the u/v offset trick worked, but not for me.
Some weeks ago I showed my game to a friend who bought my old notebook and there it was, that old hated problem (7.85 Pro, compiled to *.exe). The main character went crazy respectively his animation, although he was the only instance of this model in the current level.
It seems to be a hardware issue.
