Forums › Forums › PPC › Legacy pmax campaign tanking › Reply To: Legacy pmax campaign tanking
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crawlpatterns
GuestFebruary 25, 2026 at 12:04 pmI’ve seen long running PMax campaigns act weird after a pause. Even if Google says it doesn’t “reset,” it definitely seems to re-enter a learning phase and rebalance inventory. If most historical volume was Display, the ecosystem shift alone could explain the higher CPA now.