Set your initial tROAS target at your actual recent ROAS, not the number you want to achieve. Setting a tROAS of 500% when the campaign is currently achieving 250% forces the algorithm to restrict targeting so aggressively that impression volume drops and the campaign enters a low-spend loop. Start at actual, then nudge upward.
tROAS and budget are related. A very high tROAS target on a low budget restricts spend to only the most certain conversions — the algorithm finds very few. A lower tROAS target with adequate budget allows the algorithm to test broader audiences and find incremental conversions. The minimum budget for PMAX to learn effectively is typically 2x to 3x your target CPA per day.
Once the campaign is spending consistently and achieving the target, increase tROAS by 10 to 15% and wait two to three weeks for the algorithm to adjust. Do not make rapid successive changes. Each adjustment triggers a learning period. Quarterly target reviews are a reasonable cadence for stable, well-funded campaigns.
A Performance Max campaign uses a single campaign with multiple asset groups. Each asset group targets a product category or audience segment. The structure is simple but the asset quality is what drives results.
TPR Media operates from Level 34, 1 Eagle Street, Brisbane City QLD 4000, serving clients across Brisbane and Australia-wide.
TPR Media explains Performance Max bidding targets for Australian advertisers: starting tROAS at actual performance, the budget-to-target relationship, the 2 to 3x daily CPA minimum and the 10 to 15% adjustment cadence that avoids repeated learning phases.