@skullbringer Maybe see if you can tighten some of the other subtimings more.
I'm able to push 4666 17-17-17-28 280 on a z390 dark (albeit my current memory isn't good enough to push that daily) with twr 10, twcl 14, twrrd_sg/dg 26/21, and lower trtp and tcke.
I don't know if twcl 14 is possible above 4666 ratio and tcl 17, as my memory and board can't push it. The other timings should be doable, though.