3600 mhz ram works as 3200 mhz even with xmp enabl

Hi just bought a couple of Corsair Vengeance LPX 3600Mhz CL18 Ram Sticks, and installed on A2 & B2 slots of my Asus Prime B450m-A, my cpu is Ryzen 3400G in BIOS, there is an option called "D.O.C.P" which is XMP , i've enabled that and selected the only available profile which is 3600Mhz Cl18...