A:Answer I installed 64Gb (4x16) of Trident Z RGB F4-3600C16D-GTZR
Ensure you turn on D.O.C.P in Bios and on the front BIOS page where it says Normal mode I Changed to optimized
Had to install one stick at a time starting with B2 or the second slot, then the 4th, back to the 1st and lastly the 43rd position, restarting the machine each time so that they are recognized correctly..
You will see the slot listings on the x570 Board -2 have stars above them and you start with them.
Checking Task info (CTRL +Shift+ESC) each time ensurees they are being seen as 3600Mhz as does CPU ID / CPU Z