HiSomeone recomended to me to set "Command Rate" to "2T" here https://rog-forum.asus.com/t5/gaming-motherboards/unable-to-boot-expo-on-rog-strix-x670e-e/m-p/1060679/highlight/true#M11769 , also looks like it´s the best setting config in BIOS > Tool.....