Big Sur EFI for Z10PE-D16-WS help wanted ;)

Trying to boot the installer for Big Sur Beta and can't work out what's wrong


Any ideas?

Specs:
Asus Z10PE-D16 WS
Bios 4101
Dual Intel Xeon CPU E5-2683 v3 @ 2.00GHz
Asus Radeon RX 580
64 GB memory