I'd like to say this seems to affect Polaris based cards in general and not just the 480. I have a Radeon rx 470 and just like with DX12, vulkan does little more than crash constantly(and take the driver down with it). It doesn't matter what driver or dolphin version i try. The results are always the same. The only thing that changed with vulkan compared to dx12 is the crashing might happen at different points in the same games. DX11 and Opengl work fine, btw.
As for my system:
Core i5 2500k @4.3ghz
12GB ddr3-1600
Asus Radeon RX 470 4GB
Windows 10 pro x64
As for my system:
Core i5 2500k @4.3ghz
12GB ddr3-1600
Asus Radeon RX 470 4GB
Windows 10 pro x64