Direct link to the developer’s work.
https://github.com/HansKristian-Work/vkd3d-proton/commit/88e4f300cc0b5b6f0880c1233d562cf506b546fb
And something, something Todd Howard saying the game was optimized for PC and we gamers needed to get rich and buy new hardware.
Pretty sure Hans himself said it’s being overhyped:
https://github.com/HansKristian-Work/vkd3d-proton/pull/1694#issuecomment-1713744620
The problems are CPU not GPU. Vulkan isn’t going to make much difference.
The problem is Gamebryo and the way Bethesda develops games. They’ve got a teetering pile of inefficiencies because they’re not interested in the most efficient way to make something work, they just want it to work, and if Dale building the entire AI combat logic out of IF statements does the job while thrashing your CPU, that’s ok the game is built for 30fps.