Behold:

It's not the end of the world, obviously, but starting with 5.1.5.0, the speed of all the CPU cores in the detail box show up as 0 MHz, though the correct speed is reported on the left-hand side. This is happening with my ROG Strix Z690-G board running the latest BIOS and a fresh install of Armoury Crate using the latest Intel ME drivers.