The objects are always the same, but they want to know partial timings on different clients through the user sessions. And then use a USQL query to send the timings to a Dashboard.
Thanks in advance.
What metrics do they want? DOM or something like visually complete for that part? What kind of resource? And how are they loading them?
You could use EnterAction and LeaveAction to send a Custom Action, but i don't really think that the metrics that such action would report should be correct.