Performance Max is not going away. If anything, Google is doubling down. In 2026, Performance Max is more deeply embedded in the Google Ads ecosystem than ever. It now spans Search, Shopping, Display, YouTube, Gmail, and Discover — and Google keeps adding automation layers on top of it: AI-generated video enhancements, auto-created assets, voice-overs, and default-on creative optimizations that run unless you proactively opt out. Some of these features are useful. Some of them are liabilities. The problem is that most advertisers can’t tell the difference because they’ve never been told there’s a difference to begin with. Here’s what’s actually working in PMax right now, what’s not, and what Zeller Media recommends for advertisers who want to scale without losing control.
What Performance Max Actually Does Well
To be fair, PMax has real strengths. For ecommerce advertisers with strong product feeds, PMax can be extremely effective at scaling Shopping and Discovery placements. The algorithm is good at finding pockets of demand across Google’s network that traditional campaign structures might miss. If you have solid conversion data, clean product feeds, and high-quality creative assets, PMax can genuinely unlock incremental reach. It’s also useful for advertisers who need broad coverage without building out dozens of individual campaigns. For smaller accounts or businesses with limited marketing resources, having one campaign type that covers multiple networks can simplify management — as long as someone is actually watching what it does. Google has also improved reporting transparency over the past year. Asset group performance data, placement reports, and search theme insights are better than they were. Not great. But better.
PMax is a powerful tool. The issue has never been the tool itself. It’s how the tool gets used — and how much control advertisers give away without realizing it.
What Google Won’t Tell You About PMax
Here’s where it gets complicated. PMax campaigns are designed to maximize conversions across Google’s entire network. That sounds great until you realize what it means in practice: the algorithm will find the cheapest conversions wherever it can, and it doesn’t always distinguish between high-quality and low-quality traffic. For lead generation advertisers, this is a serious problem. PMax will happily drive form fills from Display Network placements that look great in the dashboard but never turn into qualified leads. If you’re not passing offline conversion data back to Google, the algorithm has no way to know that those Display leads are worthless. It just sees a conversion and optimizes for more of them. The second issue is brand cannibalization. PMax will capture branded search traffic unless you explicitly exclude brand terms — and even then, the exclusion controls are imperfect. That means your PMax campaign might be taking credit for conversions that your branded Search campaigns would have captured anyway, at a lower cost. Your overall efficiency looks flat or worse, but the PMax reporting makes it look like PMax is doing the heavy lifting. The third issue is the default-on creative automation. Google has been steadily expanding features like auto-generated video assets, AI voice-overs, and creative enhancements that are enabled by default. Your ad can start looking and sounding different to users without your creative team ever producing that version. Eligibility is not the same thing as quality.
Google’s incentive is to serve more ads across more inventory. Your incentive is to drive profitable outcomes. Those are not always the same thing.
The AI-Generated Creative Problem
This deserves its own section because it’s accelerating fast. Google’s video enhancement features can now flip, shorten, reformat, and even narrate your video assets — all automatically, all opt-out rather than opt-in. The voice-over feature pulls from your headlines and descriptions to generate a narration track for silent videos. The problem is that headlines and descriptions are written for on-screen reading, not spoken delivery. A narration generated from ad copy that was designed to be read may technically function but sound awkward, generic, or off-brand. A weak narration can make a polished visual look cheap. For agencies managing multiple clients, this is an operations problem. Every PMax campaign using video assets needs to be reviewed for enhancement settings. Every client needs a clear decision on whether AI-generated creative variations are acceptable, testable, or completely off-limits. The deadline for the latest round of voice-over opt-outs has already passed — and many advertisers missed it.
Creative variation is useful when it happens inside a framework of brand control. It’s a liability when it happens because the platform decided more automation would probably help.
What’s Actually Working in PMax Right Now
Based on what I’m seeing across Zeller Media client accounts and the broader industry data: Asset group segmentation matters more than ever. Lumping all your products or services into one asset group gives the algorithm no structure to work with. The best-performing PMax campaigns use tightly themed asset groups with specific creative, specific audiences, and specific landing pages. Audience signals are directional, not targeting. Google uses your audience signals as starting points, not restrictions. That means your custom segments, customer lists, and in-market audiences help the algorithm learn faster, but PMax will still go beyond them. Don’t mistake audience signals for audience targeting. Offline conversion data is the unlock for lead gen. If you’re running PMax for lead generation and not importing qualified lead data or closed-deal revenue back into Google Ads, you’re giving the algorithm an incomplete picture. It will optimize for volume, not quality. Feeding back CRM data — even with a delay — dramatically improves lead quality over time. Creative quality is the new targeting lever. As algorithmic targeting gets broader, the creative itself becomes the primary signal that determines who sees your ad and who engages. Poor creative assets in PMax don’t just underperform — they actively drag down the whole campaign because the algorithm has less to work with. The advertisers winning with PMax in 2026 are the ones treating it as a system that requires inputs, oversight, and governance — not a set-it-and-forget-it autopilot.
When to Use PMax vs. Search Campaigns
This is one of the most common questions I get from clients, and the answer is: most accounts should run both, but with clear roles. Search campaigns are best for high-intent, keyword-driven traffic where you need granular control — brand defense, specific service targeting, competitive conquesting, and lead generation where intent precision matters. PMax is best for broad discovery, product-level promotion (Shopping), cross-network reach, and scaling beyond what Search campaigns alone can cover. The mistake is letting PMax do everything. When PMax runs alongside Search campaigns without proper structure, it cannibalizes branded traffic, muddles attribution, and makes it impossible to tell what’s actually working. Define the role of each campaign type, set clear boundaries, and monitor overlap.
What Zeller Media Recommends
At Zeller Media, we are not anti-PMax. We are anti-unquestioned PMax. Here’s our framework: audit your current PMax setup for brand cannibalization and asset quality. Segment asset groups by theme, not by convenience. Feed offline conversion data back to Google if you’re running lead gen. Review every default-on creative enhancement and make an active decision about each one. Monitor placement reports to understand where your ads are actually showing. And never evaluate PMax performance in isolation — always compare it against what your Search campaigns would have captured on their own. If you want to know whether your Performance Max campaigns are actually performing or just hiding behind Google’s attribution, book an audit. I’ll show you exactly what’s happening inside the black box.
PMax is a tool. Tools need operators. Don’t let the platform operate itself.
