Ah, the joys (and limits) of Performance Max reporting! If you're trying to break down how each asset group is performing, Google doesn’t make it super intuitive—but there are a few ways to dig in.
First, head into your PMax campaign and click on the “Asset Groups” tab—this gives you a basic view of clicks, impressions, and conversions per group. It's not super detailed, but it helps.
If you’re running ecommerce campaigns with a product feed, the Listing Groups section inside each asset group gives you product-level performance, which is gold for shopping campaigns.
Now, if you really want deeper insight and more control, a good trick is to duplicate the PMax campaign and isolate each asset group—basically one asset group per campaign. That way, the reporting becomes way clearer.
Finally, check the Insights tab for creative-level feedback (like which headlines or images are performing best), but just know it won’t give you full-blown ROAS or CPA breakdowns per asset group. It’s a bit of a workaround game for now, but totally doable with the right structure.