Originally Posted by ajlueke
I had a similar issue, if I set the RAM clock on the main UEFI page, auto scaling of infinity fabric and northbridge did not work. If I set the RAM speed on the main page, and also set it in the AMD Overclocking menu, then Infinity Fabric and northbridge scale normally up to 3600 MHz. I had to set it in both places for the auto scaling. Everything else can be set in "Extreme Tweaker" (timings). All FCLK settings can be left on auto unless you are planning on going over 3600 MHz.
I currently have my Corsair Dominator kit (4X8GB) at 3600 CL16, 1.35V and it scales correctly on the fabric (1800MHz) and northbridge (1800MHz in CPUz)
My board seems to be special kind of troll.
Getting clocks to sync the way you described did not work, but you and xeizo with his DOCP comment on another reply still inspired me to poke around for different solutions.
And i've found one.
DOCP off (AI Overclock Tuner set to "default")
Set memory frequency and fclk in the Extreme Tweaker tab.
Set memory frequency as well as timings (hexadecimal!) in Advanced Tab - strictly speaking i am not certain setting the memory freq here again matters. Works for now, anyway.
pictured CL14 3400 did not boot successfully, but 3466 CL16 (15 with geardown rounding it up i assume) has passed preliminary testing and i'm below 70ns latency for the first time on zen2
The DDR-Timing settings provided in the extreme tweaker menu MUST NOT BE TOUCHED for my board if i want to run more than 3200MHz with 1:1, or it will go back to getting stuck on random post codes and begging for Reset CMOS.
Curiously, running less than 3200MHz with FCLK-setting and timings in extreme tweaker does work as expected. This 2703 ABB Bios is all kinds of messed up.