So I haven't seen this noted anywhere so figured I'd post it here, so it at least is something you can try to test. While playing BG3 on Steam, when I pick "Vulkan" for my choice of API, the menu screen looks blurry. Fonts have a washed out, heavily aliased look as does the rest of the UI. Here's my specs:
CPU: Intel I-7 7700 @4.20
Graphics: GTX 1080 (latest drivers installed)
RAM: 16 GB
Desktop Resolution: 3840x2160 60hz (Vizio 4K TV)
When I view Options from the main menu, it says the game is set to 3840x2160-60hz.
Note that when I switch to DX11 the problem goes away.
I'm a bit puzzled by this, as it feels like my setup is fairly typical, except maybe the output to the 4K TV, although I know a number of folks who do that as well. The problem persists after the main menu, when I run the game. Strange side note: When I run the actual game it flipped the resolution up to max of 4096x2160.
I would like to gain the benefits of running BG3 with a newer API. Any help is appreciated.