Performance Max in 2026: Asset Experiments, New Audience Exclusions, and What Actually Changed

The Performance Max Competitor Playbook on this site is still accurate on the fundamentals, but Google shipped enough real changes to PMax in 2026 that it’s worth a proper update rather than leaving the original post to quietly go stale.

What’s Actually New

Asset experiments. PMax now supports proper experiments at the asset level, letting you test creative variations against your live campaign in a structured way rather than swapping assets manually and guessing whether a change actually moved performance or you just caught a good week.

“Your data exclusions.” A new setting in campaign settings lets you exclude specific audiences from seeing your ads, covering customer match and remarketing audiences directly. Previously, keeping a campaign from re-targeting existing customers when you specifically wanted new-customer acquisition took workarounds. This setting does it natively.

What to Actually Change in an Existing Campaign This Month

Set up your first asset experiment on your highest-spend campaign. Don’t experiment everywhere at once. Pick the campaign where a performance shift matters most, run one clean creative test, and let it reach statistical relevance before drawing conclusions.

Add customer match exclusions if new-customer acquisition is actually the goal. If a campaign’s objective is bringing in new customers specifically, exclude your existing customer list using the new data exclusions setting. Without it, PMax’s broad targeting can spend a meaningful share of budget showing ads to people who’ve already bought from you.

Re-check your exclusion list actually matches your current customer data. If your customer match list hasn’t been refreshed recently, exclusions built on stale data won’t exclude the customers you actually have now. This is a good moment to confirm the underlying list is current before relying on it.

What Hasn’t Changed

The core PMax advice from the original playbook still holds: feed it good creative assets, give it clean conversion data to optimise against, and don’t expect granular keyword-level control the way a Search campaign gives you. These 2026 additions are refinements to that model, not a replacement for it.

Frequently Asked Questions

Get More Out of Performance Max

If your PMax campaign hasn’t been touched since it was set up, a free audit will show you exactly which of these 2026 additions are worth using for your specific account.

Book your free Google Ads consultation at as86.pro — bilingual service in English and Arabic across all UAE markets.

Related reading:

• Performance Max Competitor Playbook: Reach Your Rival’s Shoppers (Without Breaking the Rules)
• Google Ads AI Max Takeover: What Dubai Advertisers Must Do Before Dynamic Search Ads Disappear in September 2026
• RSA Search Term Categories Dubai 2026: Cut Wasted PPC Spend in UAE