To put a finer point on driver breakages... part of why Vista was so disastrously bad at launch was specifically because they'd drastically changed the DirectX kernel driver model to support DWM[0]. Nvidia in particular was responsible for a third of all Vista crashes, with another third being ATI (now AMD RTG). WDDM was a moving target right up until launch and it took about a year for Vista to actually be usable[1].

[0] https://learn.microsoft.com/en-us/windows-hardware/drivers/d...

[1] A year afterwards of trying to convince people that Vista was good now (which it was), Microsoft threw up their hands and released Windows 7.