2017 15" MacBook Pro (RP560) [7th,4C,H] + RX Vega 64 @ 32Gbps-TB3 (Razer Core) + macOS 10.14 & Win10 [Leonardo Gallardo]
First of all, I Need to thank you all for sharing your experience.Without you I couldnt handle to get my eGPU work.I first tried the main guide to install my eGpu on bootcamp,but Nothing worked and I had to delete the bootcamp partition because EFI Bootloader has removed the Option to enter in Windows.So I just made a new one and unplugged the eGPU during the whole Installation process.After all bootcamp assistant Drivers were installed,I plugged in the enclosure and it recognized a VGA compatible device.After a Restart of Windows, I just waited until some sounds came up and it worked instantly on my external monitor through the GPU.Till now I didnt update the vega64 Drivers because it tells me that everything is installed.In Device Manager I don't even get a error 12 or 43 for the Vega64. My Radeon pro 560 dGpu has an error 43,but I dont even mind.So in conclusion no disabling of PCI x8 x4 or x16 needed.I have to admit that I only tested Divinity:Original Sin 2 on max Settings and 1440p and It was smoother(+60FPS) than I expect for this Plug&Play Method.Can't tell if it's the large Memory in my MBP 2017 15" that prevents that error ,but after 3 Days hanging in my room trying to figure this out I am very happy to now take Advantage of this awesome piece of Hardware!
Mojave automatically uses Vega64 for Unreal Engine or Premiere Pro when starting.Awesome!
The only Thing now that has changed that it Needs 30sec-1m Longer to boot when I unplugged the eGPU enclosure.
Thank you all!