Why? You do realize this is Intel's first major uarch overhaul on the desktop since 2015 (2016?) & both Ian, Steves (HBU & GN) said that the BIOS has been out for these things, in the board makers' hands, for quite a while. In fact the last patch did increase performance as evidenced at AT. It's simply a case of Intel pushing this chip to its limits, heck if it wasn't for MCE & unlocked power limits you can bet your bottom dollar that it'd be nowhere close to where it is today. Buggy firmware is a result of a (near) complete overhaul from what we've seen rehashed over & over again since Skylake!