I play an open-world RPG every evening on my small form factor PC and know exactly how it should feel. After installing Intel i830/i845/i852/i855/i865 (Windows NT) , it's noticeably choppier, frame times are all over the place, and tonight it even crashed once:

Fatal error
The game has crashed and will now close.
DXGI_ERROR_DEVICE_REMOVED
The GPU device instance has been suspended.
I haven't changed any in-game settings. Temps look normal. Is it possible a driver update makes things this much worse, or am I imagining it?