@ModMike
Just a big big thank you for your guide, it's been amazingly helpful to get my Hackintosh up and running.
My build is very similar, slower processor
ASUS - ROG STRIX Z390-H GAMING
i7-8700 3.2GHz
MSI Radeon RX570 ARMOR OC 4GB
Corsair Vengeance LPX 2 x 8GB DDR4 2666MHz
Crucial CT100P1SSD8 1TB NVMe M.2 SSD
Corsair VS650W Active PFC 80 Plus PSU
Corsair Hydro H60 Liquid CPU Cooler
TP-LINK Archer T9E AC1900
GMYLE Ultra-Mini USB Broadcom Bluetooth
What works? Seems like everything - I haven't got a webcam yet, but am confident that FaceTime will work. iMessage, handoff, continuity, unlock with Watch all work ok, as well as import photo from iPhone.
The only things I've got down that differed from your guide to get me going was:
SMBIOS the board version was down as 1, and I needed to change to iMac18,3 to get it working with Handoff etc.
I tried a couple of different wifi solutions, but they were all rebooting the Hackintosh after a period, adding:
brcmfx-country=GB. in Boot Arguments in the config.plist seems to have resolved that completely.
Two things which I'm not sure about.
1) I've got two 28" 4K monitors connected via DP to the Radeon, and About This Mac lists the correct card. In Geekbench, the Compute benchmark was letting me select between the inbuilt Graphics and the Radeon, however I've just checked again and it's just listing the Radeon now.
2) The Radeon's fans... HWMonitor shows the GPU die at 53, then 54, then 55 the fans kick in, drops to 54, the fans stop, it drops to 53 then rises again. Is there anyway I can make the GPU fans stay on slow (and quiet), rather than hear them rev up every 30 seconds or so?
Anyway, another big thanks. This Hackintosh hammers my 2015 MBP Retina.