When developing an experiment intended to test Performance Max campaigns, which best practice should be followed?

Setting the Performance Max CPA or ROAS target to a level comparable to other campaigns
Running the Performance Max experiment 1-2 weeks before evaluating results
Setting an altogether new CPA or ROAS goal for Performance Campaigns
Limiting the Performance Max budget to 10% of other campaigns’ budgets

The correct answer is:

Setting the Performance Max CPA or ROAS target to a level comparable to other campaigns.