As I said, "good chance it'll be caused by hardware" does not mean "100% chance it'll be caused by hardware".
hu, running in circles.
it is my understanding only certain bugs like graphic glitches or so are caused by hardware. bugs like "person x is invincible after you do sidequest y in a certain way" are independed of hardware. that only a certain amount of people may encounter that error has different reasons. mainly their playing style and outcome and order of all the situation the game throws at you.