The Changelog here: VitalPBX Phone System | Change Log
Contains the line “Core: we are releasing a new script that optimizes MariaDB’s performance. This script gets applied automatically for new installations. In the case of existing installs, you can run the command “vitalpbx —optimize-mariadb” after business hours.”
If you run the command as written you will get a Unknown Command error, I believe the correct command is “vitalpbx optimize-mariadb”.
Hope this saves someone else a headache.