It's not nearly as bad as that for me, but Vulkan graphics have been noticeably jerkier since the last patch. I had just arrived in Act 2 before it was released. I've not tried playing around with settings yet or with DX11.
That was essentially my starting point. I had a save right before entering Act 2 when it updated, so I'm unsure how Act 1 faired with the patch. Walking around I get some jerkiness, but cutscenes become slideshows for a few frames or don't work altogether. Like an NPC will move as thought talking, subtitles will play, but no audio or mouth movement, other times entire sentences are just skipped with companion dialogue that were there before or a scene will just skip to afterwards and can't be restarted.
I am literally unable to use DX11. My game just crashes after every 5 minutes like it's on a timer or something. That was an issue that patch 3 seemed to cause on my end though. Vulkan can run for hours with zero CTDs though. My major issue is just the performance after the patch.
Edit: I'm thinking I might just put the game away for now and wait a year. I'm kind of hoping they release a definitive edition like DOS2 with a "complete" act 3, some fan requested content, modding tools and bug fixes.
