I tried also this beta BIOS with no issues except the fact that the CPU is running at 4.450 mhz in CB20 instead of 4.500-4.525 mhz all cores with BIOS 3003. No improvement for FLK, still limited to 1.866 mhz.
As a result I returned to 3003.
Did anyone managed to mod an Asus Maximus Impact VIII ? Did not found anything except for some BIOS mod alternatives.
I have that little devil and I would like to see how it works with an i7 8700k/8086k.
Thanks!