Eh, that's disappointment. I wonder how much development time they are going to lose to getting Vulkan to work, hope it isn't taking time away from expanding content.
Given how badly Vulkan worked on my machine I wish they just shelve Vulkan and focus on the system that works.
Vulcan is a huge improvement in performance on my machine - DX11 runs like poo. I have an I9 7700 and a 1080ti. I think Vulcan struggles on older hardware /shrug.
The problem I had with it was the game would literally crash every time I hit the play button on the launcher. DX11 is the only thing that works for me.
Well, it's good to have choices, right? Larian are pretty good at that

I sincerely hope they never get bought out by EA or the like; Bioware, I'm looking at you.