I'm afraid i can't find anything about it not even a patch ( well i could find a patch but a Polish one

) there's one thing you could try though.
Download GameShadow from here
GameShadow.com what GameShadow does is it tells you the latest patches for your games and your graphics card and gives you an option to download them without having to go all through different websites

.The patch ( if it finds one)
might solve problems with this game and also other games
Ps: Have you tried changing any options in graphics settings?.