amd8000controller.kext inject problem

Ryzen 3 3200G, AMD Radeon R7 200 Series (Bonarie XTX), 16gb ram, A320M-K, Realtek ALC887, Realtek RTL8186/8111 PCI-E

Followed OC guide

I successfully installed Catalina on the machine, still some issues with audio and similar but a very laggy situation to solve before.

I undestood a kext was missing, the one for my graphic card, and found this "amd8000controller.kext" that should fix this problem and let me switch my HDMI cable from my motherboard to my graphic card...

When I rebooted the system after the plist fix and the kext add I found in the log that that kext wasn't loading, everything is "success" and that an "invalid parameter".

I checked more and more times that my graphic card was compatible and that's under the list of AMD 8000 so it should be, like everything of my machine.

PLEASE HELP