You need to boot into the bios and make the change theire I had the same problem as well. For some reason even though I had 3200 mhz RAM it was running @2133mhz. You may have a slightly different experience as I have an MSI version of the board, but you want to boot into the bios and find the XMP profile. I'm guessing it should be disabled, enabling should set the RAM to the correct timing. Alternatively, you can also leave it disabled and set the speeds yourself. Google is your friend for specific settings.