I have enclosed my EFI running OpenCore 0.6.1. Some issues which I have noted in docs inside the EFI. Remember to add your serials. Some issues:
- Sleep problems still
- RTC clock problems still
- Using the original Intel WiFi/BT, works but not decent speeds at the moment.
Regarding sleep I have the same experience like
@bibendum where the monitor will not wake but I can still remote desktop to the PC and restart it from there.
Note - I am running OS X 10.15.6 Catalina with this EFI but it should work fine with High Sierra. I even tested it with Big Sur with no issues as far as I can see.