I bought 2 corsair lpx ddr4 3600mhz 8gb. When i installed them they ran at 2133mhz, then, since i couldnt find the "enable xmp" in the bios (i got a amd board, so a-xmp), i disabled and enabled back the a-xmp profile and then, for some reason, they started working at 3600mhz. My question is, is...