Graphic glitch on 5700 XT and Catalina 10.15.1 Clover Installer.

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glitch

After many tries, I was finally able to pass beyond the clover loading text [ verbose ] where it got stuck on blacks screen before, but I got this weird graphic glitch on my 5700 XT [ DisplayPort]. I tried the other ports as well and tried disabling the iGpu [ UHD 630 ] in Bios [ Internal Graphics = disabled ] but still same glitch. I can still see the installer and interact with it but can't read clearly since its all over the place.

Vanilla Install

I’m using iMacPro 1.1 / adding agdpmod=pikera was able to boot but with graphic glitch. Without it I get black screen.

Kext

• AppleALC
• VirtualSMC (with SMCProcessor.kext and SMCSuperIO.kext)
• IntelMausiEthernet
• Lilu
• USB Inject All (before you have mapped your ports)
• WhateverGreen

• SmallTreeIntel82576.kext

  MOBO:

• Gigabyte Z390 Designare

• CPU: Core i9 9900k

• GPU: Red Devil RX 5700 XT 8G GDDR6

• RAM: CORSAIR Vengeance RGB Pro 16GB x2 = 32GB SSD:

• SSD Samsung 970 EVO PLUS 1TB M2

• PSU:Cooler Master V750

Anybody had this issue before ? I'm downloading MAC OS Catalina Developer 10.15.2 Beta 2 to see if this glitch is fixed since other people are saying it might be a Catalina Navi issue. Thanks