You'll find that an extra step is needed for this to work in all games which involves patching directX files. I mentioned this a few steps back.
I'm unsure how this would work for Windows 10 and DX12.
Complete solution (Windows 8.1 - 64 Bit / Z98P-D3 / Realtek ALC887)
1. Downloaded drivers R2.71 and the Unlocked R2.71 file for A1 method
2. Enabled test mode with "Bcdedit.exe -set TESTSIGNING OFF" as administrator in a command prompt, rebooted
3. Manually uninstalled existing drivers...