Unplayably slow on Vista?

[DanielM]

It has nothing to do with dom3 or drivers. A few months ago it was much talked about how Microsoft is not directly supporting OpenGL in Vista but instead passing it through Microsoft's own DirectX-interfaces. I don't understand the details, however, it means adding an extra layer of abstraction, so everything which uses OpenGL (that is pretty much every game which doesn't run exclusively on Windows) obviosly runs slower.

If this is true, it means that better drivers won't cut it but OpenGL will be always worse than DirectX - not because of some technical reason, but because Microsoft wants it this way.

Microsoft's motivation for doing this is to force game developers to use DirectX instead of OpenGL and thus killing any platform-independent development. They know from experience that the third-party developers and not Microsoft will be blamed.