me too .....I am searching for dual cpu issues but nothing
Yes I've made many attempts with this kext .... you can give a try ... and reporthey got this message from the dev:
"Dual CPUs on Catalina have an issue with the AppleMCEReporter you need to disable it using this https://github.com/acidanthera/bugtracker/files/3703498/AppleMCEReporterDisabler.kext.zip"
it's the "v5" from earlierwow! can you post the EFI for Mojave, will give it a try after I play some more with Catalina hell !