How do you display framerate in Fallout New Vegas?

Question

I would ideally like to know a console command that will display the framerate (current and a running averages would be even better).

Answer 1

TDT worked in Oblivion engine but is not supported anymore by Fallout 3/Fallout New Vegas engine.

Unfortunately, at the moment, there isn't any known console commands that can show FPS in-game.

You have to use 3rd-parties software, like Fraps, RivaTuner overlay, etc.

I normally use Fraps trial version, that allows to show/hide the FPS in almost all games I tried.