Caporegime
Then you manually overclock it like mine, PBO/Boost is junk anyway
Or they will lock things out. The fact is there is no guarentee Zen3 is fully compatible,as even the Zen3 compatibility will probably have a disclaimer somewhere. They did this back in the day many years ago,with older CPUs,where certain things were limited. There are a lot of X570 motherboards with 16MB BIOSes too,so AMD could also point to these motherboards.