Timing in an iframe can't be measured?

Hello,

actions in frames/iframes does not trigger main browser events that we use for duration measurement - you for example don't get "Navigate" action in recorder. You may try a workround using "Match Content" actions. Into each step that you want to measure, add "Match Content" (Edit->Match Content) action that will search for specific text that should appear in the frame once it is loaded. This should give you some timings, however they will not be exactly the same as timings of content load.

I created a feature request tracked under FB137936 so that we can look at this issue.