Ad sets under 5× target CPA never exit learning

Ad sets under 5× target CPA never exit learning

The most common silent killer: a $10/day budget chasing a $22 CPA. Facebook needs ~50 conversions in 7 days to stabilize — that's 7 conversions/day, which a starved budget can't buy.

Daily budget vs % of sets exiting learning (180 sets, 90d):
— <3× target CPA: 19% exit
— 3–5× target CPA: 54% exit
— 5×+ target CPA: 81% exit

Fix: minimum daily budget = target CPA × 5. $22 CPA → $110/day floor. Can't afford it? Consolidate 4 weak sets into 1 funded set rather than spreading thin.

Read: under-funded sets don't 'spend less' — they pay full price for permanent instability.