Ok thanks very much for the help 🙏🏼It appears that a BIOS update is out for the newer CPU's although it doesn't specify 3rd gen.
https://www.asus.com/us/Motherboards/PRIME-B450M-A/HelpDesk_BIOS/
I contacted Asus about a week ago asking when they'd be making a BIOS update for my B450-F and they said it's in the works but couldn't give me a date of release.