Currently, the platform logs the duration of the screen request handling. But it does not measure the communication with end-users.
A solution might be to include some sort of javascript in pages, which would communicate back to the server when the page was completely loaded.
This would allow to measure the real user experience, performance-wise.
Sometimes there are complaints that the application is slow, but
This is important in order to pinpoint network problems, in order to exclude the platform/web server from bad performance complaints.