Hello my build updated from a Mojave to last Catalina. I only changed the graphic card used. Since I'm in dual boot with win10 I use iGPU from BIOS and in win10 I put high performance to use Nvidia one for games. In Catalina I put the string on config.plist ti disable the Nvidia card.
All seems work good other than wifi card but I need a check from you please.
I have a problem from Sleep mode. The monitor remain black and I don't have any feedback from mouse or keyboard. Only way is to reset with button and after the reboot I have no error.
I copied your EFI folder for my Z270 from your link but I keep my config.plist because with the one included I can't boot and I had Shutdown error 5 message.
My config:
Asus ROG Z270-I gaming - I5 7600k - 16Gb RAM . 2x Samsung N.vme 970 EVO drive
Link for download:
https://wetransfer.com/downloads/aff1b7eb995785d9527e06833dc5948420200428165353/833037964be071dfe20d15b216acd92720200428165435/cd9fd0
THANKS!!