We now calculate the average duration of requests in each group for both custom and third-party request groups. This can help you spot which group has requests that take longer than expected.
We've added a new chart to the Synthetic First & Third Party dashboard, and an average duration metric is available for each group in Favorites charts.
Note that as this a calculated metric, it only applies to new tests run from today. You won't see any existing history for your request groups.