Meta Turned "Related Media" On By Default. Your ROAS Is Paying For It.
Meta Ads Manager is now auto-injecting your old images and videos into new ads — without asking. Learning phase resets, ROAS drops, and there's no per-asset breakdown to tell you which creative is doing the damage. Here's what the setting does and how to kill it in 60 seconds.
Quick summary
- What it is: Related Media, a Meta Ads Manager setting that auto-adds old images/videos from past ads into new ads as "related" creative.
- Default state: ON. You opt out, not in.
- Impact: Off-brand / outdated assets appear next to current creative. Learning phase can reset. ROAS degrades. No per-asset breakdown means you can't even diagnose which variant is underperforming.
- Fix: Open each ad → Edit → scroll past primary creative → find "Related Media" → review and remove. ~60 seconds per ad.
- Meta's official status: No announcement. Business Help Center page exists but the setting was flipped without an in-product notice.
What Related Media actually does
When you build a new ad in Meta Ads Manager, Related Media lets Meta "suggest and automatically include images or videos you've used in past ads." In other words: you upload one hero video for a spring promo, and Meta silently attaches three images from a different campaign in November — because, to Meta's ranker, they're "related."
According to Meta's own Business Help Center entry, the goal is to "include a wider selection of your media assets" so the delivery system has more variants to test. On paper, that's Advantage+ Creative with extra steps. In practice, what practitioners see is older branding, inconsistent messaging, and conversion events quietly flowing to assets they never approved.
Practitioner report — @mannybarbas_ on X
"Meta turned on 'Related Media' by default. Your old creative is showing in your new ads. Check every ad set — it's killing performance."
Posted April 2026. Within hours, practitioners across r/FacebookAds and LinkedIn confirmed the same pattern — unexplained performance drops matched to the date Related Media appeared in their edit flow.
Why your ROAS quietly dropped
Related Media doesn't just add creative. It breaks three things at once:
Learning phase resets
Adding a new asset to an active ad is a significant edit in Meta's ranker. It can push the ad set back into learning, burning budget while the algorithm re-explores. Practitioners report resets showing up within hours of opening (and saving) an ad that had Related Media silently attached.
Brand drift
The "related" assets are pulled from anywhere in your account's history — old logos, retired slogans, even concepts from discontinued products. For any brand running tightly-scoped direct response or lead gen campaigns, that's on-screen inconsistency you never signed off on.
No per-asset breakdown
This is the part that makes it genuinely dangerous. Ever since Meta introduced Flexible Format, advertisers have had no way to see which specific image or video drove which specific conversion. Related Media inherits the same limitation — you get aggregate numbers, and no way to prove which asset is costing you money.
The business impact: If you're running lead gen or eCommerce at scale and you haven't touched Related Media, you're almost certainly losing 5–15% of effective spend to off-brand auto-injected creative. At a $50k/month budget, that's $2.5k–$7.5k you can reclaim with a 60-second setting change per ad.
What practitioners are reporting
This isn't one post. The pattern is consistent across community channels:
X / Twitter
@mannybarbas_ surfaced it with screenshots showing old ad creative appearing in edit panels for brand-new ads — with the toggle already set to include it.
All About Media flagged it as a new default that agencies need to audit across every client account before the next budget cycle.
Privyr teardown
Privyr's step-by-step guide walks through the exact disable flow and notes that advertisers seeing "new creative variations along with learning phase reset and a sudden performance drop" are almost certainly hit by Related Media.
Jon Loomer's 2025 changelog
83 Meta advertising changes in 2025 — Related Media sits inside the same pattern as Advantage+ defaults and auto-enabled ad enhancements: shipped on, no migration notice, found in the wild.
Turn it off in 60 seconds
Meta doesn't expose this as an account-level toggle — you have to handle it per ad. If you run a lot of ads, block 20 minutes and walk the active list.
- 1 Open Ads Manager and filter to your active ads (not ad sets, not campaigns — the ad level).
- 2 Click Edit on any ad.
- 3 Scroll past the primary creative block. You'll see a section labeled "Related Media" with a list of auto-selected images/videos.
- 4 Click Edit next to Related Media to see every asset Meta is attaching.
- 5 Deselect everything you didn't approve. Save. Repeat for every active ad.
- 6 Watch performance for 3–5 days. If CPM drops and CTR/ROAS recover, you just confirmed Related Media was the drag.
Note: saving the edit is itself a "significant edit" in Meta's ranker. There's a ~24 hour blip as learning settles. The fix is still worth it, but expect noise for a day before the clean signal shows up.
The bigger pattern: Meta's silent defaults
Related Media isn't an isolated case. Over the last year Meta has shipped a string of "help you" defaults that change campaign behavior without an in-product notice:
- Advantage+ Creative now defaults on for new campaigns, reshuffling your creative variants server-side.
- Ad enhancements (standard, music, visual touch-ups) auto-enable and reset learning when triggered.
- The April 15 pixel / Advanced Matching outage went unacknowledged on Meta's status page while practitioners saw 0% match rates in Events Manager.
The pattern is consistent: Meta ships changes, it doesn't tell you, and the first signal you get is a ROAS drop. Auditing defaults quarterly is no longer optional — it's maintenance.
Know the next silent change before your ROAS tells you
Ad Status Monitor watches Meta's RSS feeds and community signals so you find out about delivery outages, pixel breaks, and silent defaults minutes after they surface — not days after ROAS dips.
- Real-time Slack notifications on Meta, Google, Microsoft incidents
- 5-minute polling — know within minutes, not hours
- Monitors Meta, Google, Microsoft, Pinterest, Amazon, ChatGPT, and Claude
- $10/month — cheaper than a single hour of degraded ROAS
Recent Meta incidents worth auditing
0% match rate, no event parameters, no Meta acknowledgment.
High disruptions to ad delivery. Budget overspend risk.
~2 hours. Attribution data gaps for affected window.