Help Needed: Big Sur installed using opencore, platform panic when install Radeon Vega 64

I had a Catalina install working using clover. I broke clover when preparing for Big Sur, and have moved to opencore.

I have successfully upgraded my machine to Big Sur using opencore 0.7.6, following the vanilla guide. I had to remove my Vega to do this.

I have not worked on USB and audio yet, wanting to enable the Radeon Vega first.

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Motherboard is an Asus ROG Hero IX based on Kaby Lake. Graphics card is a Sapphire Radeon Vega 64 Nitro+. I'm using iMac18,3.

When I...

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Author: philb10