So I have a pair of 3200 MHz DDR4 sticks. And I've read somewhere that when I have 2 sticks, they're each split I'm half and should be like 2x 1600 MHz? Though I am only able to get my RAM to run at 1300 MHz each, before my system gets unstable. And it's set to 1067 MHz by default? Why is that, and should they be set to 1600 MHz each by default? Or is this something XMP related?