I haven't heard of any other users reporting such regular crashes. I am thinking it is still likely it is your graphics card driver, especially since you have a relatively unusual variant (CAD-suitable cards are usually low volume with different drivers). And it's still perfectly possible that the latest drivers are buggy. Graphics drivers are generally terrible.
Can you get the DLL/module name causing the crash? It might be in the Windows error logs or need some configuration to get Windows to show you detailed (rather than "friendly") error messages. If the DLL name is the name of your driver, it would prove that the issue is there, and that you need to go complaining to nVidia.