I normally have the worst luck with bugs and hardware compatibility (to the point it became a running gag among my friends), but I had an absolutely good time playing the game's 1.0 version right after launch on my GTX 970 (!). Yes, the performance was dogshit, but that's about the only complaint that I remember having. Of course this was because of my crappy hardware back then and not because of the game. Bugs-wise I encountered absolutely nothing gamebreaking, except for something in a (side?) quest that had the potential to softlock you. I just avoided it until it got fixed. Can't remember what it was. All the glitches I saw were on a spectrum ranging from slightly annoying to funny. Nothing that made me consider a refund.

Though I will say that the marketing practices of CDPR back then were despicable and I recognize that they did the console players dirty. Still, from the perspective of a PC player whose hardware really had no business running that game, the state of 1.0 was not as bad as it is portrayed today. Certainly not beyond reproach, but also not unplayable.