How to detect creative fatigue in Meta Ads

Frequency and reach describe delivery pressure. Click-through rate and thumb-stop behavior describe response. Conversion rate, cost per acquisition and return on ad spend describe the business outcome. Fatigue is more credible when these groups move together.

A high frequency with stable response may be acceptable for a warm audience. A falling click rate at low frequency may indicate a weak message rather than saturation.

Use a consistent window and compare the current period with the asset's earlier stable period. Note changes in audience, placement, bid strategy, offer and landing page that could explain the movement.

Avoid comparing a mature retargeting ad directly with a new prospecting ad. Their delivery patterns and expected frequency are different.

If the message still converts but attention is declining, produce a new execution of the winning angle. If clicks remain stable but conversion falls, inspect the offer, landing page and measurement. If both decline under rising frequency, rotation or audience expansion is more plausible.

Record the reason with the action. That turns the next creative review into a learning loop instead of another isolated pause.