What we've seen work across Primer customers when a B2B Meta campaign stops improving.
If you run B2B campaigns on Meta long enough, you'll probably hit a point where performance starts to stall.
The pattern looks like this. You launch, results look good for a while, and then frequency climbs and performance softens. Meta's algorithm tends to get stuck exploring the same pockets of your audience until it exhausts them, and often doesn't do a good job of shifting out of those pockets unless you force it to.
Four things to check
1. Rotate your audiences
Structured rotation is one of the most effective approaches we've seen. Start with your core Primer audience. When frequency climbs and performance softens, launch a 1% lookalike, then move to 2% and 3–4% as needed. Once those fatigue, rotate back to your core audience. Going from the tightest lookalike to the loosest matters because the 1% version stays closest to the seed audience, which makes it the most conservative place to start.
Rotation isn't for everyone, since it needs a big market. If you're selling to a few thousand accounts, you'll run through every version quickly and the lookalikes will drift a long way from your buyer.
The wider your lookalikes go, the more bad-fit reach you're paying for. Exclusions are the counterweight. If you sell enterprise security software, for example, you might exclude students, job seekers, agency employees, and people at companies under 50 employees. Primer's Anti-ICP exclusions support up to about 50M people, so you can push reach through lookalikes while filtering out the wrong profiles. The Meta Lookalikes play walks through the setup.
2. Change the creative properly
Swapping a headline or recoloring a background doesn't trigger Meta's creative-level learning. The algorithm treats it as the same asset with some noise.
What counts as new is a different format, a different hook, or a different visual structure. If all your ads are product-led, try one built around a customer story. If they all open on the same pain point, pick a different one. For example, a static screenshot ad about "saving time on reporting" could be replaced by a short video of a customer explaining the problem they had before.
3. Duplicate the ad set
This one sounds almost too simple, but it works surprisingly often. Duplicating the ad set sounds like it shouldn't do anything, but it works surprisingly often when an ad set has stalled and you can't find anything wrong with the audience, creative, or tracking.
Don't make it a habit. Each duplicate goes back through a learning period, and it won't rescue a bad audience or offer.
4. Make sure your tracking isn't broken
Sometimes the problem isn't the algorithm. You might have broken something, and when Meta isn't seeing the signal it needs, delivery gets hit even when your audience and creative are fine.
Check that CAPI is still sending events correctly, your offline conversions are syncing, and UTMs and click IDs are passing through. Common breaks include a new landing page redirect that strips click IDs, a form tool change that stops passing UTMs, or an offline conversion sync that failed after someone renamed a CRM field.
Start with whichever fix matches the symptom you're seeing, and change one thing at a time. If you change the audience, creative, and ad set in the same week, you won't know what actually helped, and you'll be guessing again the next time the campaign stalls.
