[Martin v r]

have had big problems with it on my z490,but only with 4x, it works better with 2 mem
you have 3 options and it's not auto/fix, can't remember what the last one is called, but it's the one you should use

to more MHZ ?

 

[Ichirou]

You set the RTL training to Dynamic and leave the rest auto. That's all you can do.

 

[cstkl1]

ddr5 has no gain in setting rtl

opps ddr4.

also since gearing started back in z590.
leave it on trained rather than manual set

 

[bhav]

I've never had to change this setting for any of my ram overclocks. My DR kit does 4200CL16 no issue, which any good bin of DR Samsung B die / Mircron E die / Hynix DJR should manage. Micron & samsung DR kits need around 1.5-1.55v, DJR needs 1.6v for 4200CL16, and so long as the latter isn't the cheap low binned 3200 kits.

Hmm maybe I ought to add that stuff to my sig so I don't have to keep reporting it.