/console floatingCombatTextCombatLogPeriodicSpells 0
Note: Replace the 0 with a 1 if you ever want to turn these back on. 2. Recommended Add-ons for Advanced Control how to turn off damage numbers in wow exclusive
If the console commands do not persist or you want a more user-friendly interface, several add-ons restore the missing settings or offer "exclusive" customization. Cant disable floating combat damage numbers anymore : r/wow how to turn off damage numbers in wow exclusive