Google Ads has expanded Performance Max reporting with new asset segmentation and enhanced channel performance insights.
Asset Insights:
Advertisers can now break down asset reports by device, time, conversion, and network to better evaluate creative performance across surfaces.

Channel insights:
At the channel level, Google has added:
- Bulk download of campaign-level channel performance reports
- ROI columns and cost visualization
- Segmentation by conversion action and ad event type
- Diagnostics for limited serving tied to bid targets

These updates aim to give advertisers more actionable visibility into how PMax campaigns perform across networks and channels.
Read the official update here: Get more visibility in Performance Max with new asset and channel reporting improvements.