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Google now says Performance Max needs 15 conversions in 30 days to run stably.

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The number comes from a revised help page on PMax performance swings. It sets a clearer minimum for small campaigns.

If conversion data is delayed, you can see spend spikes or low ROAS. The system can still settle down afterwards.

When a channel isn't serving, the page now tells you to check Channel Prioritization. Look for channels set to low priority or with too little budget.

Spotted by Hana Kobzová via PPC News Feed.

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