Configuring my Hack to use my Vega 56

Hi folks,

My Hackintosh vanilla installation is working - but only using the onboard motherboard HDMI and iGPU, with the Vega 56 power cables unplugged.

Spec:

• Mac OS 10.14.3
• i7 9700K
• Z390 Designare
• Sapphire Radeon Vega 56 Pulse

I've collected much information from many threads on different forums, and this is the config that I believe should work, but when I boot with this setup (or any other that I've tried), my monitor loses signal before I get to the Mojave load screen.

• Vega power cables reconnected
• Monitor connected to DP port on the Vega
• BIOS -> Initial Display Output: PCIE Slot 1
• BIOS -> Internal Graphics: Enabled
• Clover/SMBIOS: iMacPro1,1
• Clover/Devices/IntelGFX: 0x0

Clover/Devices/Properties section

Clover/Graphics section

kexts/Other directory

drivers64UEFI directory

Any ideas? Many thanks in advance!