[SOLVED] Memory is only displaying 1800mhz on cpu-z when it should be 3600mhz

Solution
Corsair Vengeance RGB PRO DDR4-3600 C18 DC - 32GB

it's showing only at 1800mhz. I set it to 3600mhz on bios. Auto would only leave me at 2666mhz. Is something wrong or is it all fine?
Nothing is wrong. 1800Mhz is another way to display 3600Mhz DDR -- Double data rate -- The effective transfers are twice the clock speed of 1800.