I've created a ticket with both Corsair and ASRock.
And just got back from working all day, and am in the process of final stages of troubleshooting.
So far, I've re-flashed my BIOS to 1.50 (current up to date) and have tried 1.52 beta as well.
And each time I fully uninstall iCue + Delete Corsair registry values before doing a complete shutdown / PSU off, +CMOS clear.
Am using just 2x Ram DIMMs at a time in the default A2 +B2 DIMM slots as that is what ASRock says to use for just 2 sticks for Dual Data Rate. I'll be trying out the other slots with just 1 kit at a time as well.
Still no SPD-Write enable/disable in the Beta Bios either. Blah ASRock >.<
