I posted this on another thread but I'm in almost the same boat as you, patch 5 is completely not working for me, even with this newest hotfix.
I used to have pretty minimal crashing for any of the other patches but this patch is super bad. I've verified the files, reinstalled the entire game, moved it to my ssd from my hdd, updated my driver's, restarted my computer and steam and the launcher - nothing ever worked.
Not Vulcan or dx11 works after like an hour of playing, it just starts crashing or otherwise, it just plays the music for the game but no visuals. It hasn't crashed my computer yet but it almost did
