How to set ram speed on Biostar z370gt6

Solution
For Biostar I believe you can locate your XMP settings in the “Performance” tab of your BIOS. You would need to enable XMP for your RAM to clock at 3200MHz.
6.
O.N.E Menu | page 31

You will see in picture on page 30 of BIOS manual
Memory Profile ------------------------ Default Profile

That is where you are now at the default profile, and below that are XMP profiles. You need to enable the XMP profile that suits you.