Unlike Search campaigns, Performance Max doesn't give you full transparency at the keyword or placement level. But that doesn't mean you can't optimize effectively.

Key Points:

• Reporting limitations: You won't see keyword-level or placement data, but you can track performance by asset group, audience signal, geography, device, and overall ROAS or CPA;
• Google rates creative assets as Best, Good, or Low. Replace “Low” performers regularly and refresh creative to keep the algorithm learning;
• Audience signals act as guidance to the system. If performance is weak, test new signals (like remarketing lists, GA4 predictive audiences, or Custom Segments) while keeping changes gradual;
• Budget adjustments should be modest (no more than 20% at a time) to avoid resetting the learning phase. Always allow 7–10 days before judging new changes;
• If a campaign underperforms significantly, consider pausing weak asset groups, tightening audience signals, or even relaunching with improved creative. Splitting into multiple PMax campaigns by product/service line can also help maintain focus;
• PMax thrives on stability and consistent inputs, but you can still guide it by replacing poor assets, refining audience signals, and ensuring your product feed or creative library is top-quality.