I have the following:
Asrock X570 Taichi on latest BIOS (P2.70)
In ryzen master I do not have the ability to enable PBO, it is grayed out and states "future feature in development". I have tested with an older BIOS and have tested with my chip in an X370 board as well. None have worked. I can turn it on manually via BIOS settings. At work my 2600x in an ASUS X470 board works just fine. I bought the processor on release day a couple years back. Not sure if the first batch were nerfed??