Providing your SMBIOS and CPU model can help determine if it is a configuration issue. Share public link
The primary objective is getting a clean display output at native resolution without system crashes or black screens during boot or cable hot-plugging. uhd 770 hackintosh hot
This is where the "hot" keyword becomes literal. Because the UHD 770 is masquerading as an older UHD 630, the driver matching is imperfect. Providing your SMBIOS and CPU model can help
Because the CPU mimics the GPU, optimizing your processor's power curves is critical to bringing down temperatures: uhd 770 hackintosh hot