Already had it in my library but the controller is poorly optimized.
Witcher 1 does not use the controller at all.
I have W1 and W2, in my GoG library and finished both.
Witcher 1 is using a modified NWN Aurora engine, and uses KB/Mouse only.
Witcher 2 is a new game engine and plays with KB/Mouse or Controller. IMO it plays much better with controller than mouse. I played this one with Controller.
I play tons of RPGs and these are really among the best I have played. CDPR attention to detail is top notch.
My computer is too weak to play Witcher 3, but when I upgrade, that will the first thing I play.
IMO CDPR are the best company in Gaming.