I just finished South Park the Stick of Truth on PC. I had no stability problems, but did notice a couple of graphical glitches (character didn't appear or only part of their clothing appeared).

It's everything you've heard it was. Anyone who is a fan of South Park is probably going to love this game and I'm shocked they were able to get away with all the things they did. I guess being "animated" makes it all ok? Worth playing.