Stuck at Post Install: Fixing DRM (OpenCore)

been stuck on this all day, any help appreciated !! (following OpenCore post install guide)

CPU: ryzen 7 3700x, GPU: gtx 1080, motherboard: asrock x570 phantom gaming 4, my config.plist

On High Sierra 10.13.6 (17G14033). Also, not sure if this is related, but I was able to install and run my Nvidia driver.

first, the VDADecoderChecker doesn't work, I get this error when I run it: An error was returned by the decoder layer. This may happen for example because of bitstream/data errors during a decode operation. This error may also be returned from VDADecoderCreate when hardware decoder resources are available on the system but currently in use by another process. VDADecoderCreate failed. err: -12473

I thought I could still continue despite it not working, so I moved on to the next step: tried shikigva=256 with iMacPro 1,1 SMBIOS and shikigva=40 with iMac14,2 SMBIOS - neither of these worked.

not sure what to do beyond this, pls help :')

submitted by /u/charsiu_baoo
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