your ram does have very high cl 18
I have 14,15,16 on my miners.
I use 3000 or 3200
if you crash 💥 when you open ryzen
something is set wrong in the bios.
For reference mine ryzen 5 3600 does 7k with memory cl 20, 3333mhz. I guess it needs bandwidth more than anything, I would try 3600mhz cl 20 if your memory chip does.