@ Chew,

You may want to let Asrock know that latest bios based on Agesa 1.0.0.0.6b has vcore issues when using P State overclocking. It will either immediately push vcore .05v + above what the same settings in Agesa 1.0.0.0. 6a bios is delivering or it will insidiously creep up in the background to .05 + over time, also it tends to get "stuck" at this max volt with very little undervolting when the cpu down clocks in idle.

This is all tested on X370 Fat Pro Gaming which as we know is pretty much the same board as the Taichi. Others on the Asrock forums have described similar overvolting/spiking with the Agesa 1.0.0.0.6b coded bios as well.