I made adjustments to Radeon Crimson 16.9.1 and Vulkan should work now. Give it a try and feedback if you like.
I am currently working on adjusting 16.9.2 which is out since yesterday, expect it till the weekend with Vulkan and M395X support as well.
Please KEEP IN MIND INSTALLING AND USING THE DRIVER IS AT YOUR OWN RISK! I AM NOT RESPONSIBLE FOR ANY DAMAGES! PLEASE BACKUP YOUR STUFF PRIOR INSTALLING THE DRIVER!
For installation your Windows needs to be in Testsigning Mode otherwise installation will fail!
For prerequisities and installation details please see the mXDriver Howto.
SHA1 Checksum: c88e9c06e199942eefb56568179acbaff9076b7a