If the components all supported what you are trying to do then things would work. I haven't done much overclocking on the Z170 platform, but I imagine that most motherboards still work so that when you overclock the CPU by adjusting the clock, it will overclock the memory as well. There are an awful lot of variables that could have been changed when you overclocked your CPU. I would try returning the CPU to stock and then set the RAM. If the RAM can't perform at its rated speeds, you might consider returning it.