In build 5.0.7909 I managed to get Zelda Wind Waker working with Vulkan/MoltenVK by changing the shader compilation to "Asynchronous (Ubershaders)". Running around Windfall Island at 4K resolution I can get about 45-55 fps (compared to 32-42 fps for the same settings but with OpenGL as the backend). So far I am very pleased as I will be able to play the two games I want to, away from my TV: Wind Waker and Galaxy 2. I'll settle on 1080p for a good balance in resolution and performance. 
Thanks all the many devs working on Dolphin!

Thanks all the many devs working on Dolphin!
