prime z490

I booted Highsierra in my asus prime z490-p Mobo opencore everything working other than the vram issue VRAM Showing 3 MB is there anyway to fix vram and get rid of the flickering both DP and HDMI are working in mirror mode no dual monitor arrangment setting in preferences

Hello! So I have an old hackintosh with a GA-Z77X-UD5H motherboard for which I want to upgrade the graphics card... and separately I'm planning my own first hackintosh build with an Asus Prime Z490-A. I want to put both on Big Sur. I have never bought a GPU before, my old hackintosh was built...

Updates: 01/27/2021 Updated Files with a new GPU SSDT. Shiloh's Build for Tristan ASUS Prime Z490-A - Intel Core i9-10850K - CORSAIR Vengeance LPX 64GB - Sapphire Radeon Pulse RX 5700 XT Components: ASUS PRIME Z490-A LGA 1200 (Intel 10th Gen) Intel Z490 SATA 6Gb/s ATX Intel Motherboard...