Hi there.
Ah, I understand. I must admit mixing AMD and Nvidia is something I haven't tried.
Yes, the AMD support is now available in Clover just by editing config.plist. No need for the kexts, but you're right, the GPU is identified as (usually) "R9 xxx" or similar. You can amend this manually though and
I covered this in my build follow-ups (second half).
As for disabling the Nvidia GPU, it's true you can disable the
driver easily, but hiding the GPU from macOS probably needs all the official Nvidia kexts removing from the Extensions directory... Unless someone else knows an easier way etc.
I was able to get my machine working again on Intel.
I learned quite simply that the Nvidia Webdriver has to be installed and working (key word working), if your machine has an Nvidia card physically installed in it.
Like I was saying in my other post for some reason patching old drivers with my current OS build number wasn't working (though this has worked in the past). Symptoms would be the machine loading with no hardware acceleration strangely the Nvidia control panel would show the "NVIDIA Web driver" selected. I reinstalled the new driver .158, this time my machine loaded with a black screen. Putting NvidiaGraphicsFixup.kext and Lilu.kext files in my 10.13 resolved this.
At this point I was experiencing what most people on his thread were experiencing (very laggy graphics performance).
Configuring my config.plist file, along with my Bios with the necessary things to allow the machine to function on Intel Graphics, and everything is all good at this now! I put the "IntelGraphicsFixup.kext" kext file in for good measure...
From my experience the Nvidia Webdrivers suck, and they have always sucked. Now with these new round of drivers, they really suck. Before these last few drivers, the problem would be hard to spot. I would notice little lag issues, like when moving windows around, or when watching videos. On boot everything would be fine, but after awhile the issues would show up on their own.
I was also able to duplicate the issue at will more recently by playing Beats One. My machine's graphics performance would automatically go to crap. I would recommend really observing your graphics performance, just to make sure your not having the issues I'm describing. I read a lot of post all over the Internet with people describing these issues in different ways, some have even recorded videos of it.
I think I'm going to keep this RX560, it only cost me $129 at my local fryz. Card works beautiful, so if I run into graphics problems I know I can replace my Nvidia card with this in a pinch.
If your work flow is like mine, and your not doing anything graphics intensive with MacOS, and you got Windows installed on another drive to game. You may want to run MacOS off the internal graphics, and Windows off the Nvidia.
I know I'm long winded, but I really hope this helps someone, or maybe Nvidia reads this and fixes their Sh*tty drivers...lol