Sorry that you're having that experience; I'm slowly encroaching 200 hours worth of gameplay without a single hiccup or crash! I played the game in full and then immediately started it again with absolutely zero issues. Dunno if it has anything to do with it or not, but im using the ps4 disc and the digital ps5 upgrade. I played the game and beat it when it initially released and put about 40 hours into it. It was nothing remarkable, but now it is a completely different experience. I cant get enough. I hope your hardware allows you to play it someday!
