@rednow, what are the default values with your mod? Can you share an overdriventool screenshot too 
?
My reg-file mod is based on vega ? Only changes are to set "greyed" low power state voltages to 900mV (905 or 910 if you are a silicon lottery loser) and increase SoC clock to 1200.
All other settings are done in OverdriveNtool as I wrote before.
I didn't touch gpu or mem clocks in power play at all.