I had a midrange PC at the time, and only encountered a handful of bugs my first play through.
Performance could be rough in downtown sections, but it’s was far from unplayable on day one.
I am firmly convinced that most of the people experiencing horrible performance or mystifying bugs were attempting to play the game on their smart fridge or something. If you had a decent gaming machine from the last 7 years or so, the game ran fine.
That being said, it should have never released on Xbox one or PS4. Those consoles were just too old and the performance wasn’t their.