so I played with CB a bit on my lunch break (30min rofl)
settings that dont change,
145x35=5ghz
1.725vcore
1.74vdimm
ich + ioh = 1.325v
triple channel
1.3vtt 1.45pll -141cb
1.35vtt 1.45pll -141cb
1.35vtt 1.55-1.6pll -150cb
messing with dram ref voltages +25mV to all no change
Dual channel no change
increased vcore to 1.85v no change.
any other Ideas?

playing more tonight
does rtl's have an effect?