I downgraded my Asus Z690 Hero from bios 4301 to 4001. That didn't resolve the ACPI error. But it did resolve the extreme system instability I was seeing. BIOS was getting stuck at F6 inconsistently. Which is a reserved status. Basically could not restart without a hard power reset. The system was then stable. But still had this ACPI bug still showing up. Thanks so much kevin.atlee. I swapped my SAS card and 3060 and the problem went away. On this motherboard, each slot runs at 8X, with the 2 cards. So no big deal with them swapped.