Same problem here with X470-F motherboard's latest BIOS 4406, also instability problems. I had to rollback to 4207 using other means as ASUS' USB flash and online flash BIOS utilities either showed BIOS up to date or not a proper BIOS error when selecting 4207. Also, the latest chipset update for the X470-F and other X470 boards specified to be installed before latest AGESA / Ryzen 3000 support are not showing any newer drivers than currently installed when starting the setup process and selecting custom install; all chipset drivers show as up to date.
X470-F, 2700X, 5700 XT Nitro+, 970 EVO, LanCool 2 Mesh Performance, H115i Pro, 16GB3000C14, TT650W Gold