The patch brought some stability for me, only one more crash yesterday (albeit during the last sequence of quests, so, a bit annoying). Took me 75 hours to finish it, and I managed to get all but three achievements (those are: New Game +, NG+ on hardest difficulty and getting all achievements).
I decided not to do bother with the datapoints I missed, nor doing NG+ / hardest difficulty. After trying NG+ ultrahard for half an hour and encountering normal enemies that were as hard as end-game enemies were during my normal playthrough, I figured it wasn't for me. I guess it's cool for those that like the challenge. I thought normal difficulty was just perfectly balanced for me.
Anyway, as I said a few times, I really loved this game and I'm glad I got to play it on PC with what a - for me - a good port. Mouse controls, FOV options and switching off motion blur really makes a huge difference in play comfort for me (as opposed to playing the console version via PSNow earlier this year).
But yeah, gorgeous game, a blast to play, satisfying combat, intriguing world and story/lore... looking forward to the next one (which I hope will to come to PC eventually...).