To be completely honest this game is actually really good.
Personally I've not encountered any bugs aside from when a town didn't load in and I had to restart one time.
People complain about lag, not experienced any and my setup isn't even that high (I get an almost constant 60fps, sometimes dipping to 45 in the biggest towns. All on Ultra or V/High.)
I quite like the combat despite what people say, but my only real gripe with the game is the fucking atrocious voice acting. There was a scene in the tutorial when there was two Czech's speaking in a Lancashire accent talking to a German guy with a German accent. It really ticks me off that the main character has a lisp too.