Gigabyte Z370 and 390 users..need help with RAM divider?

[LGabrielPhoto]

Hello!
So I am trying to find my limits of my CPU/RAM but have a problem. I can set my RAM to say 3300 and it shows 3300 in Windows just fine but if I keep trying to push higher like 3600, the mobo is doing some auto changes (I guess some ram divider) that puts me back to 3200 in Windows even though it shows 3600 in BIOS.
As I am just leaning this new UEFI from Gigabyte, I wonder if someone can offer advice on which setting I need to adjust for this.

Thanks!

 

[pendragon1]

use cpu-z to see what the ram is really running at, windows might be misreading it.

 

[LGabrielPhoto]

use cpu-z to see what the ram is really running at, windows might be misreading it.

by Windows I mean in CPU-Z, Aida, etc.

 

[pendragon1]

ok. bios up to date? try bumping the ram voltage and make sure everything is in manual mode(timings voltage etc)