fabiosun das ware total nett wenn du dich so gut auskennst wie andere berichten, ich habe es nochmal probiert auch wieder freeze
your latest EFI is pretty good (i cant judge USB mapping but other part is almost good)
try attached config in your EFI
I have enabled Dummypowermanagement and disabled two patches not useful and not well documented for AMD desktop system
>Let see if it works and then you can optimize GPU performance
it seems also you have i225 ethernet card so this is another problem to solve in your EFI
and it could creates for now a reboot in initial user configuration steps (reboot or freeze)