@CaseySJ I just want to say thanks for all your work helping people in this thread.
I have achieved success with my recent build. I mostly used the dortania guide , but I definitely consulted and read through this guide quite a bit, too.
specs: iMac19,1 / Z490 Vision D / i7-10700K / Radeon RX 5700 Mech OC / 32GB G.Skill Ripjaws V 3600 Mhz
2TB Inland Premium NVME SSD in slot 2 running macOS Catalina 10.15.5, Opencore 0.5.9
1TB Sabrent Rocket NVME SSD in m.2 slot 1 running Windows 10 Pro
Phantenks Eclipse P600S
biggest challenge was: my RX 5700 GPU was giving me problems with the install, even with the pikera boot-arg. apple logo to a grey screen with error message and text after the first reboot.
The fix was: I had to add -wegnoegpu to the boot-args in USB drive's config.plist *after* the first reboot in the install process. then, remove the USB drive, remove the -wegnoegpu boot arg, and then finish the install.
Everything else was a breeze comparatively-- that part took quite a while to figure out.
sleep/wake working, thunderbolt hotplug seems to be working... still need to fix my audio layout id, but I am using an external audio interface with 0 issues, so that is low on my priority list. Also need to figure out how to enable the iGPU because sidecar isn't working yet. Oh and the 2.5gig Ethernet isn't working yet, only the 1gig. using onboard Bluetooth and no issues with it so far. Eventually I will get a Fenvi Bluetooth card. Does sidecar require wifi to work as well, even if you use it with a wired connection?
one of my front panel USB ports causes external hard disks to show up as internal. not a huge issue. I'm guessing this is due to the port limit?
one thing I was wondering--what is the downside of continuing to use the CFG Lock patches in the config.plist? What benefit will I notice from disabling it in the BIOS? I am kinda nervous about bricking my install as I already jumped the gun and transferred loads of files and setup all my software.
I guess I should really get on making a bootable backup drive... wow, anyway I typed more than I meant to. Thanks again, this community has impressed me with how responsive and helpful everyone is, and I really enjoyed building my first hackintosh.