Fatigue is a function of frequency within an addressable audience, not of calendar time. A creative running at low spend against a large audience can last months; the same creative at high spend against a narrow audience can fatigue in under two weeks.
The mechanics are straightforward. As frequency climbs, the people most likely to respond have already responded, and the remaining impressions go to progressively less receptive viewers. Platform algorithms compensate by widening delivery, which raises cost.
Because it's frequency-driven, scaling spend accelerates it. This is the trap in a successful campaign: the more you push a winner, the faster you burn it.
Why Creative Fatigue matters
Fatigue sets the required creative production rate. If your winners degrade within three weeks and you produce four assets a month at an 8% hit rate, you are structurally guaranteed to decline — the arithmetic doesn't work regardless of how good the creative is.
The signals, in order of appearance
Click-through rate falls first, usually while conversion rate still looks fine. Frequency climbs past roughly 2.5–3 within a 7-day window. CPM rises as the algorithm widens delivery. CPA follows last — which is why teams watching only CPA react two weeks after the decline began.
Benchmarks
- Typical Meta creative lifespan at scale
- 2–4 weeks
- Frequency where fatigue usually begins (7-day)
- 2.5–3.0
Ranges drawn from Digital Squad client accounts and published industry data. Treat them as orientation, not targets — your category may differ substantially.
Common mistakes
Waiting for CPA to move
CPA is the lagging indicator. Watching CTR and frequency gives you two weeks of warning to get replacements into rotation.
Refreshing on a fixed schedule
Monthly refreshes ignore that fatigue depends on spend and audience size. Some assets need replacing in ten days, others last a quarter.
Confusing fatigue with a bad creative
An asset that performed for three weeks and then declined worked. Killing it as a failure loses the learning about why it worked.
Abandoning winners instead of iterating
A fatigued winner is the best raw material you have. Variants of a proven concept hit far more often than new cold concepts.
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