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Performance Max
What should be analyzed if a long-running profitable campaign suddenly stops performing?
Changes in how the delivery algorithm handles time-of-day spending may require advertisers to manually audit when sales occur relative to audience time zones. Understanding these shifts helps in identifying why previously stable campaigns may suddenly experience performance volatility.
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Want the full playbook? Read Performance Max Playbook for 2026 — A practical guide to Performance Max setup, structure, audience signals, creative, bidding, and common mistakes across every Google channel.