HTTP Raw Perceived Slowest Page / Page Element Time (ms)

The amount of time that it would take a web browser to play the slowest page in the step, step group, or transaction. This is a good metric for setting thresholds because it is the closest active measurement of what the user-experience is likely to be.

User Action
Use this metric to identify problem pages. After you identify a page or transaction that's slow to response respond to user requests, you can drilldown and analyze each phase of the transaction to isolate and repair the problem.