Meta Ads Creative Fatigue 2026: What Changed with Andromeda
Meta's Andromeda algorithm update changed how creative fatigue works. What shifted, why your old refresh cadence is failing, and what to do about it.
If your Meta ads stopped performing around late 2025 and nothing you tried fixed it, you weren't imagining things. Fatigue didn't just speed up. The pattern changed.
The shift came from Andromeda, Meta's largest algorithm overhaul since iOS 14. Understanding what changed is the only way to build a creative strategy that holds up in 2026.
What Andromeda changed about ad delivery
Before Andromeda, Meta's delivery algorithm was relatively predictable. It optimized toward conversions based on historical behavior, and creative fatigue followed a pattern that most media buyers had learned to anticipate: frequency climbs, CTR drops, CPM rises, you refresh.
Andromeda changed the scoring model at the auction level. The system now evaluates creative quality and predicted engagement in near real-time, meaning the algorithm reweights your ad's competitiveness continuously rather than settling into a steady-state delivery pattern.
Fatigue no longer follows the old linear arc. Under Andromeda:
- <strong>Ad sets can fatigue in 8-12 days</strong> instead of the previous 3-4 week window at moderate spend
- <strong>Fatigue signals are compressed</strong>: you may have 24-48 hours of warning before performance collapses
- <strong>CPM spikes earlier and more sharply</strong> because the algorithm downgrades your ad's predicted engagement faster
- <strong>Audience overlap compounds faster</strong> because Andromeda's reach expansion saturates a smaller effective audience at higher implied frequency than your reported number shows
The reported frequency number in Ads Manager is now a lagging indicator. By the time it looks bad, you're already in the steep part of the decay curve.
Why the old 3x frequency rule doesn't work anymore
The "pause at frequency 3" rule came from an era when frequency and actual fatigue were reasonably correlated. That relationship has broken down.
Under Andromeda's reach expansion behavior, Meta dynamically broadens who your ad is shown to. This means your reported frequency can stay low (because new people are being pulled into the audience) while a core portion of your high-value audience is seeing the ad 6, 8, or 10 times.
You can have a campaign with a reported frequency of 2.1 that is completely burned out with your actual buyers.
The signal that matters now is engagement decay rate: the week-over-week change in CTR relative to impressions served, broken down by audience cohort. Flat or rising impressions with declining CTR is the early Andromeda fatigue signature. Frequency is a secondary indicator.
The new fatigue timeline for different spend levels
Based on accounts running under Andromeda, here are the approximate fatigue windows by monthly spend:
$1K-$5K/month
- Creatives typically hold for 14-21 days before significant decay
- The algorithm's reach expansion is slower at this level, so audience overlap compounds more gradually
- Early warning window: about 3-4 days before performance collapses
$5K-$20K/month
- Creatives typically hold for 8-14 days
- Andromeda's reach expansion is more aggressive here, saturating your target audience faster
- Early warning window: 24-48 hours. This is where most buyers get caught.
$20K+/month
- Creatives may fatigue in 5-10 days at peak performance
- At scale, Andromeda burns through your relevant audience fast and starts reaching people who won't convert
- Early warning window: 12-24 hours in some cases
These are starting points, not rules. Fatigue speed varies with audience size, creative diversity, and vertical competition. The consistent finding across accounts: everything is faster.
What Andromeda rewards
Andromeda also rewards advertisers who understand what its scoring model prioritizes.
Native content outperforms polished production. Andromeda's engagement scoring penalizes "ad-like" content more aggressively than previous algorithms. Content that looks like organic video (slightly rough, no visible call-to-action buttons, natural delivery) achieves higher predicted engagement scores at auction and costs less to deliver.
Shorter creative cycles beat longer ones. Build a production system that ships new variations continuously. Four fresh creatives every week beats one evergreen creative you try to extend indefinitely.
Format diversity is a delivery lever. Running video, static, and carousel simultaneously means your ad set delivers across inventory placements with different engagement scoring models. When your Reels creative fatigues, your static images can still compete in feed.
Hooks matter more, for longer. Andromeda's engagement scoring weights the first 3 seconds of video more heavily than before. A weak hook that loses attention early gets deprioritized faster and at a higher cost than it would have under the previous algorithm.
The creative rotation approach that works now
A creative strategy that holds under Andromeda has four components:
Maintain a 4-6 creative minimum per ad set. This gives the algorithm enough variation to continue optimizing while individual creatives decay. When one drops below your performance threshold, add a replacement before pausing the fatigued ad.
Treat each creative as having a defined lifespan. Rather than hoping a creative will keep running, plan for it to fatigue. Set a maximum run date when you launch it. This shifts you from reactive (responding when performance drops) to proactive (having replacements staged before you need them).
Watch engagement decay, not frequency. Set up a custom column in Ads Manager tracking 7-day rolling CTR change per ad. When CTR has dropped 25%+ from peak over 7 days, you're in early Andromeda fatigue regardless of what your frequency shows.
Build platform-native creative. Content shot vertically, delivered naturally, with the hook in the first two seconds. This is the creative profile that Andromeda's scoring model consistently rewards.
To see which of your ad sets are currently in the fatigue window, run a free scan on your account. Campaiyn's fatigue detection was rebuilt for Andromeda's signals: it flags ad sets entering the decay curve 3-5 days before the performance collapse, which is enough lead time to respond.
The attribution complication
One thing that makes Andromeda fatigue harder to manage is the attribution change that coincided with it.
The standard 7-day click attribution window that most buyers use understates the lag between when someone sees an ad and when they convert. Under Andromeda's expanded reach behavior, you're reaching people earlier in their buying cycle, which means the conversion lag is longer.
This creates a trap: you see CTR declining, assume the creative is fatigued, refresh it, but the original creative was still converting on a lag. You've interrupted a working ad set mid-cycle.
The fix is to monitor view-through conversion patterns alongside CTR and CPM. If your view-through conversions are holding steady while CTR drops, that's a different situation than if both are declining together. Refreshing too early when view-throughs are holding is a real budget mistake under Andromeda.
What to do now
If you haven't audited your creative performance since Andromeda rolled out, you're likely running at least one fatigued ad set without realizing it. The signal patterns are different from what most buyers have been trained to look for.
Three things worth doing this week:
Or you can let Campaiyn do this automatically. Connect your ad account for free and get a fatigue report across all your active ad sets within minutes.
Andromeda changed the rules. Adapt your monitoring and production cadence to match it, or keep paying more for worse results without understanding why.