Jaydon382 :
ok i have the MSI - X99A GAMING PRO CARBON
and im manually changing it in the bios.
I have similar issues, when you boot back in the bios is it showing the correct speed? For instance, i have the corsair vengance RGB pro 3200mhz But when i load the iCUE, (their led leighting software) it shows the speed at 2333mhz. But other programs such as Speccy show it at its actual speed. Task manager also has mine listed at 2333mhz.