Exact same boardAre we talking B650 Gaming X or a different board?
I am running Vengeance DDR5 6000C36 (Expo 36-36-36-76) without an issue on my B650 Gaming-X AX with a 7600.
Assuming it is the same board (or even if it isn't), have you tried a bios update? The latest LMG $5000 extreme upgrade (now with AMD) had this exact issue until the bios was updated. IIRC the board was a Gigabyte B650I.