"Never raise budget more than 20% a day or you reset learning."

This rule is from 2019 and people still parrot it.

Learning resets on SIGNIFICANT edits, not a flat 20% ceiling. On a high-spend ad set ($500+/day) you can push 30-50% and stay learned because volume is already strong.

The 20% rule actually hurts low-spend ad sets the most — that's where edits sting.

Do this instead:

— Under $100/day: bump small, 20-25%, every 48h
— $500/day+: push 40% if CPA held the last 3 days
— Always raise AFTER a good day, never during a dip
— Watch the edit not reset learning in Delivery

Test it on your biggest spender. Not your fragile ones.