Uhd 770 Hackintosh (Works 100%)

Use MacPro7,1 or iMacPro1,1 – these rely on dGPU.
Do not use iMac19,1/20,1 – they expect full iGPU acceleration.

Add boot arg:
-igfxvesa (forces VESA mode, avoids kernel panic) uhd 770 hackintosh

Fix: Your device-id spoof is wrong. Ensure it's A67E0000 (little-endian for 0x7EA6). Double-check your hex entry in ProperTree/OCAT. Use MacPro7,1 or iMacPro1,1 – these rely on dGPU

Enter your UEFI and set the following: