Hi
@pastrychef thanks for your guide and explanation I just successfully upgraded yesterday my Hackintosh with your same MoBo and CPU. I didn't used the UFI but I've just adapted mine including your USB SSDT, USB Boot Flags, spoofed the iGPU and switched the the Audio Device ID.
Anyway, I overclocked the CPU at 5GHz on all cores following this video:
that explains almost everything and suggests safe overclock settings (using Adaptive Voltage) even if he uses a Z390 Asus Mobo.
Those are my settings in the BIOS:
Basing on your scores I guess that I can't reach the same scores because of RAM (16GB 2400MHz), Geekebench scores depends also on RAM but I can wrong and maybe you can gently give me any other advice or settings in order to have the best stable/performant settings for the i9-9900k on our MoBo. Thanks in advance.