Question 1

Why can't we just turn on tROAS & leave it on?

Accepted Answer

Every time we apply tROAS, it stops the algorithm’s learning process and prevents us from infusing more spend into the campaign. While the tROAS setting is applied, the algorithm "muscle" atrophies.

Often times, over-pacing to force the algorithm to learn and grow, and then pulling back on the spend to allow the ROAS to shoot up, is better than simply applying a tROAS goal - it’s like telling the algorithm to “only use the knowledge you already have to try to spend the budget and hit the goal.”

Doing this causes problems because the knowledge it has doesn't update with the ever-shifting market of new users, which causes the algorithm to not be able to spend the full budget, and ultimately causes us to fall behind on spend, and lose valuable time in the learning process.

We only apply it for short periods of time, and we have to sync it up during a portion of the month when we want to push the algorithm in that particular direction (high return), but it's not a long-term solution to achieve high performance.

Question 2

What time period should I use to judge ad performance?

Accepted Answer

It's tough to look at things on a week-to-week basis. Our team aims for hitting the ROAS goal on a month-to-month basis. Performance is intentionally bumpy throughout the month because we do things like using the Stair-Step Method to push the algorithm to grow, or testing small changes, etc.

Question 3

Why shouldn't I judge the performance of each campaign individually?

Accepted Answer

It is tough to look at a single campaign's performance. Our team views account performance holistically. This is because campaigns often interact with the same leads/customers and depending on the attribution model, those conversions can get divided up in a way that makes one campaign look worse than it really is.

Question 4

How long should I wait to see an accurate Performance Report in Performance Max?

Accepted Answer

According to Google, whenever you make any changes to automated bidding, strategies, and budget, you have to wait for at least 14 days (plus your conversion lag) to view accurate and complete performance reporting.

Conversion lag is simply “the delay when people click an ad and when they perform a specific conversion action (for example with, install, purchase, add-to-cart, etc.)”

What happens is the system will optimize towards what we tell it to do, so you must wait to make any changes for 14 days when Google can accurately assess performance.

Making any changes prior to that learning period will reset the account back into the learning period. This means, you’ll have to wait for another 2-3 weeks.