CPU Clock Ratio greyed out in GA-Z170X-Gaming 7

[MikiMoto]

So I got my GA-Z170X-Gaming 7 together with a 6700k. But like someone in the beginning of the thread said, the CPU Clock Ratio option is grayed out... the only way to overclock are the predefinied overclocking profiles... Tested with Bios F4 and F5e, no changes :X

Is that a known bug? Or any ideas how to fix it?

[Wattsee]

Just put your cursor over the CPU clock ratio and type what multiplier you need eg 46.  Worked on mine