ASRock x370 killer sli/ac not working with G.Skill Trident Z series 3200 RGB

[thordic0]

I can't get my RAM to run over 2133. The DRAM speed in the BIOS is is set to auto and detects it as 2133. When I change it to 3200, I get stuck in a boot loop. ASRock's App thing says my BIOS and Drivers are up to date. Any ideas?

 

[scout_03]

what happens if you set axmp .

 

[WildCard999]

Try 2933, if that doesn't work then 2667.
https://www.asrock.com/mb/AMD/X370%20Killer%20SLIac/index.asp#Specification