17.x.x No longer use DX12

It could just be me but.I just ran some test for performance using Driver 17.2.1 then 17.3.3.An i found the same issue.Performance was just normal.I saw no benefits.So i took a wild guess that some of the issues i had seen before came from DX11.So i took a look at the DXdiag.exe an yeap! That's what it was.Using the R9 390 on Windows 10 Pro I have found DX11.2 is active on these drivers.An DX12 is not.Scrap them an start from Driver 16.3.2.