Win 10 definitely didn't like my old Nvidia 7000 series. I purchased a new one for 30-40 bucks, and Win 10 is all good.
I LOVE 10. Very stable......not as stable as win 7, but not bad.
The only issue I have is the Start Menu sometimes gets "locked", and takes some time, to fire. I believe it is Cortana trying to so some silly search stuff.
Later,
Geo