With all BIOS Versions between 1405 and 2802 it was impossible for me to reach (with my Hynix C-Die) 3733MHz @cL 16 RAM Speed, since 2802 I can reach 3733 @CL16 stable again. But for this Setting, my RAM need´s 1,48 VDimm. Which Chips are on your F4-3600C16-16GTZNC?
But, why you are so sure that...