All I did was open and mount EFI and open your EFi/config.plist inside clover configurator, enable SIP in Rt Variables panel (ie CsrActiveConfig= 0x00) save your config and reboot. When you're back in, install nvidia driver, DONT REBOOT, open clover again and change CsrActiveConfig back to 0x67. Now reboot. Polish up CUDA if required. Done.
Metal: Supported, feature set OSX_GPUFamily1 v2