Google Search Console Performance Report logs additional desktop features
you may see an increase in desktop impressions in the page experience report and the performance reports
The original announcement was posted yesterday and it was super confusing, but this morning, Google has clarified the announcement to read.
Announcement
Google Search Console Search and News performance reports when you specifically filter those reports using the “Good Page Experience” search appearance.
What changed
You can drill in and filter by “Good Page Experience” search appearance in the Search and News performance reports to see if this is likely from the new logging of additional desktop features.
What to look out for
Make sure to annotate your reports and take note of this change and if you notice significant changes in your reporting on or shortly after May 13th, it may be attributed to this change.