How Performance Max Display placements are hurting your performance (and your brand)

Performance Max is a type of Google Ads campaign that uses Google AI to decide when, where, and to whom your ads are shown. PPC automation for Performance Max campaigns can help you run ads across Search, Shopping, YouTube, Gmail, Discover, and the Display Network.

But that can put your ads on Display websites and apps that are irrelevant, low quality, or unsuitable for your brand.

In this article, we’ll explain how Performance Max Display placements can hurt performance, where the biggest risks are, plus what you can do to reduce wasted spend while protecting your brand.

Key takeaways

• Performance Max can expand your reach across Search, Shopping, YouTube, Gmail, Discover, Maps, and Display, but that automation also means you have less control over exactly where your ads appear.

• Display placements can hurt both performance and brand perception when ads appear on low-quality websites, irrelevant apps, clickbait pages, or content that does not fit your brand.

• Poor Display inventory can also generate accidental clicks, bot traffic, duplicate clicks, and other invalid traffic, wasting budget on visitors who were never likely to convert.

• Placement reporting has limits, so advertisers need to review both channel-level performance and individual placement reports to spot risky websites, apps, and YouTube placements.

• You can’t remove the Display Network entirely from Performance Max, but you can reduce unwanted exposure with placement exclusions, content suitability settings, negative keywords, brand exclusions, and URL exclusions.

What are Performance Max campaigns?

Performance Max campaigns are a type of Google Ads campaign that uses Google AI to automate where your ads appear and how much you bid.

A single campaign can reach customers across Search, YouTube, Discover, Gmail, Maps, and the Display Network. For eCommerce advertisers, Performance Max can also run Shopping ads using information from your Merchant Center feed.

You provide Google with your campaign goals and the assets it needs to create ads. The quality of your product information also matters, since Google uses those details to understand what you sell and match products with relevant customers. From there, it decides which ads to show and where to show them.

When Performance Max campaigns make sense

PPC automation for Performance Max works best when your product feed is accurate and your conversion tracking correctly records purchases and revenue. It's especially useful for large or complex campaigns, where Google can automate bidding and ad delivery across many products.

Your product feed is accurate and complete

For retail Performance Max campaigns, your product feed is one of Google’s main sources of information about what you sell. Google uses data like product titles, GTINs, categories, and attributes to understand your products and match them with relevant searches.

If that data is incomplete or unclear, Google has less context to work with. For example, a furniture retailer with clean titles like "Oak Dining Table – 6 Seater – Scandinavian Design" and accurate attributes (material, size, style) will be more likely to see Performance Max serve ads to high-intent users searching for those specific features.

Your conversion tracking reflects accurate business results

If purchases are missed, counted twice, or given the wrong value, Google optimizes your campaign using inaccurate information. That’s why your Google Ads setup should follow best practices and track completed purchases, order value, subscriptions, or new customer acquisitions.

This is important when using Maximize Conversion Value or Target ROAS, since both strategies rely on accurate conversion values to guide bidding.

For example, if a $200 order is recorded as $20, Google may bid less aggressively for similar conversion opportunities as the sale appears less valuable. Over time, that can push the budget away from products and audiences that are generating revenue.

Your bidding strategy matches your campaign goal

Performance Max uses Smart Bidding to set a bid for each auction based on the result you want. If your priority is getting more conversions, Maximize Conversions or Target CPA can focus bidding on conversion volume. If some conversions are worth more than others, Google Shopping bidding strategies such as Maximize Conversion Value or Target ROAS can prioritize conversion value instead.

Google recommends at least 15 conversions in the past 30 days when using value-based bidding, since lower volumes make performance data less reliable.

You need automation to manage a large product catalog

A retailer with 40,000 SKUs across multiple brands can’t realistically create and manage granular product groups or individual bids for every item. PPC automation for Performance Max campaigns reduces that manual work by managing bidding and ad delivery across the catalog.

For smaller catalogs, that level of automation may be less useful. If you only manage a few hundred products and want more control over product groups and bids, Standard Shopping can give you that flexibility.

💡 Managing a large catalog in Performance Max? Our Google Shopping campaign structure guide shows you how to split products into separate campaigns based on margin, category, or performance so you can control budgets accurately.

You want to reach customers across more Google channels

Performance Max makes sense when you want to reach customers beyond Search and Shopping. A single campaign can also place ads across YouTube, Discover, Gmail, Maps, and the Display Network.

That broader reach gives you more chances to connect with customers before they are ready to search for a product directly. Someone might first see your ad on YouTube, come across the product again on Discover, then return through Search or Shopping when they are ready to buy.

How Display placements can damage your brand

With PPC automation for Performance Max campaigns, you set the campaign structure, but you don’t manually approve every website or app before Google displays your ad.

This means your ads can appear on unrelated mobile apps or pages with content that doesn’t fit your brand.

Low-quality placements can put your brand in the wrong context

A Display ad sits alongside whatever someone is already reading or using. Across the Google Display Network, that could be a news site, niche blog, or mobile app. Google also provides placement and content-suitability exclusions because not every website, app, or piece of content will be suitable for every brand.

For example, if you sell $1,500 designer sofas, your creative assets might look polished, but appearing on an ad-heavy clickbait site filled with misleading headlines sends a very different message. The placement feels disconnected from a premium product and can undermine the positioning you have built across the rest of your digital advertising.

Click fraud and invalid traffic can waste ad spend

Not every click on a Display ad comes from a real potential customer. It could be a bot generating repeated clicks or a publisher trying to increase ad revenue. Google uses the broader term invalid traffic for this activity, which also includes accidental and duplicate clicks.

So if your ad placements attract invalid traffic, your campaign can record clicks that never had a realistic chance of converting. That can make performance look better than it is and, when poor-quality traffic isn’t filtered out, it can distort performance data and waste budget that could have gone toward potential customers.

Common risky ad placements to watch out for

Even with audience signals and campaign targeting in place, Performance Max can still place ads across a wide range of Display inventory. Some placements deserve more scrutiny than others:

• Mobile games and apps: Ads can sit close to navigation buttons or gameplay controls, so users may tap them by mistake. Those clicks can increase traffic without bringing in people who intended to visit your site.

• Kids’ apps: These placements can be poor matches for brands selling products aimed at adults or specialist buyers. A premium sofa ad inside a children’s game may generate impressions, but it is unlikely to reach someone ready to buy.

• Ad-heavy and clickbait websites: Some sites are designed to maximize page views and ad clicks rather than provide useful content. Your ad may be seen, but appearing beside sensational headlines or cluttered pages can make the brand feel less credible.

• Unrelated websites: Google may identify someone as a potential customer based on their browsing behavior, even when the page they’re currently visiting has nothing to do with your product. The audience may be relevant, but the placement itself can still feel completely out of context.

• Brand-inappropriate content: Content around controversial, misleading, or sensitive topics can make the ad feel misplaced and damage trust.

You can reduce some of these risks by tightening targeting and reviewing placements regularly. These Google Display advertising best practices show where to start.

Risky placements can be difficult to spot in Performance Max

Google Ads gives you two different views of where your Performance Max ads are running:

• Channel performance report: Shows how channels like Display, Search, YouTube, Gmail, and Discover are performing. You can compare metrics like clicks, cost, conversions, and conversion value to see whether Display is contributing to results.

• Performance Max placement report: Shows the individual websites, apps, and YouTube placements where your ads appeared. It also shows how many impressions each placement received.

The limitation is that Google doesn’t provide full performance data for every individual placement. You might see that your ad appeared 8,000 times on a particular website, but not exactly how many clicks, conversions, or dollars spent came from that site.

How Performance Max interacts with other Google Ads campaigns

If you already have Search, Standard Shopping, or other Performance Max campaigns in the same Google Ads account, Google decides which campaign is eligible to serve for each auction. In some cases, Search gets priority; in others, Ad Rank decides which campaign enters the auction.

Performance Max and Standard Shopping use Ad Rank to decide which campaign serves

Performance Max and Standard Shopping follow the same auction rules. If both campaigns are eligible to show the same product, Google compares their Ad Rank and serves the campaign that ranks higher.

Ad Rank considers factors such as:

• Your bid
• Expected click-through rate
• Ad relevance
• Landing page experience
• The context of that specific auction

So a Standard Shopping campaign with a $2 bid doesn’t automatically beat a Performance Max campaign with a lower bid.

Exact-match Search keywords take priority over Performance Max

When someone searches for a term that is identical to an eligible exact-match keyword in one of your Search campaigns, Google prioritizes that Search campaign over Performance Max.

In simple terms:

• Your Search campaign targets [running shoes]
• Your Performance Max campaign can also serve for running shoes
• Someone searches “running shoes”
• Google prioritizes the Search campaign

However, phrases and broad-match keywords don’t get this same automatic priority. They can share priority with Performance Max search themes, with Ad Rank helping decide which ad serves when both remain equally eligible.

But there are exceptions.

Performance Max can still serve when your Search campaign is not eligible

Having the right keyword in Search does not automatically mean that a campaign can enter every auction. Google still checks whether the campaign has enough budget, meets targeting requirements, and has eligible ads and landing pages.

For example:

• Your Search campaign has run low on budget: If the campaign has a limited budget, Google may stop showing your Search ad every time someone searches for that keyword. But if Performance Max still has a budget and can target that search, Google may show the Performance Max ad instead.

• The keyword gets very little search traffic: Google can temporarily stop a low-volume keyword from triggering ads. While that happens, Performance Max may still show for the same search.

• Google has disapproved your ad or landing page: A policy issue can stop the Search ad from running until you fix it. Performance Max may still be able to show another eligible ad.

• Your Search campaign does not target that person: Your campaign settings might exclude someone based on factors such as location. If Performance Max includes that user within its own targeting, it can still show an ad.

So if Performance Max picks up searches you expected Search to handle, check your Search campaign first. Budget limits, keyword status, disapprovals, or targeting settings may be keeping it out of the auction.

Multiple Performance Max campaigns do not bid against each other

If two Performance Max campaigns are both eligible to show an ad at the same time, Google doesn’t make them bid against each other. Instead, Google compares the campaigns first. Then, it chooses the one with the higher Ad Rank and sends only that campaign into the auction against other advertisers.

Running multiple Performance Max campaigns can still make sense when different parts of your catalog need separate:

• Budgets: For example, footwear and accessories may need different spend limits.

• ROAS targets: High-margin products may need a different return target than lower-margin products.

• Markets: Different countries may need their own budgets or targeting.

• Business goals: New products may need a different strategy from established bestsellers.

So if two Performance Max campaigns are doing the same job, combining them can give Google more data to work with and make performance easier to evaluate.

💡 Want more? We’ve done a detailed breakdown of the pros and cons of Performance Max, so you can see when its cross-channel reach is useful and when the lack of control creates problems.

Take control of your Performance Max

Even with PPC automation for Performance Max campaigns, you still have several ways to control where your ads appear, which searches can trigger them, and which pages receive traffic.

• Check your Performance Max placement reports: Review the websites, apps, and YouTube placements where your ads appeared. Look for anything that feels unrelated to your audience, low quality, or out of place for your brand.

• Exclude specific websites and apps: Once you spot a placement you don’t want, add it to your exclusions. This stops Google from showing your ads there again and gives you a simple way to clean up poor-quality inventory over time.

• Adjust content suitability settings: You can also control the types of content your ads appear beside. Use these settings to avoid sensitive, controversial, or otherwise unsuitable content that does not match how you want your brand to be presented.

• Add negative keywords: Check which searches are triggering your ads. If you keep appearing for terms that are unrelated to what you sell, add them as negative keywords so you stop paying for that traffic.

• Use brand exclusions: Decide whether Performance Max should show for searches involving your own brand or other brands. Exclusions can help when branded traffic is better handled by a separate Search campaign or does not fit the goal of the PMax campaign.

• Exclude unwanted URLs: Performance Max can send traffic to different pages on your site when Final URL expansion is enabled. Exclude pages such as careers, support, or discontinued product pages if you do not want ad spend sending visitors there.

Make Performance Max work on your terms with Channable

Performance Max amplifies whatever you feed into it, making product feed quality an important part of campaign performance. Channable helps you structure, enrich, and segment your product data before it reaches Google.

With Channable, you can create custom labels that separate high performers from new arrivals, apply rules to fix missing GTINs or incomplete titles, and automatically update product data as your catalog changes. A well-structured feed gives you a stronger foundation for segmenting products and steering your Performance Max strategy.

Channable's PPC tool connects your Google Ads performance data with product-level insights, so you can see which items drive results and adjust your feed structure without manually exporting reports. For Google Ads specifically, Channable automates campaign creation, bid management, and product segmentation directly from your feed.

Try Channable for free