Select [Profiler...] from the display menu.
Press the [Start] button of the profiler.
While you are in the in-game preview, you can get more information such as voice acquisition etc..
Since by default the 3D update is monitored frequently, it is good to uncheck the "Record 3D positioning information" check box from [Settings...] in the upper-right of the Profiler window.
For more details on the profiler, see Profiler (measurement of playback information) .