MSI Z490 NEW BIG SUR INSTALL HANG HELP

MSI MPG Z490 Pro Gaming Plus

Intel 10900

32 GB ram XMP1.0

Thunderbolt disabled

iMac20,2 symbios

Big Sur 11.6.5 OpenCore 0.8.0

Sapphire RX 5700XT (HDMI for testing install flash) agdpmod=pikera boot-arg

Here is screenshot of hang:

Any ideas on the Legacy shim 2 stop?