Software that displays the mean frames per second
Yes, there are tools available that display your average frames per second in a game.
Displays average values during gameplay. Yes, Fraps shows live FPS and lets you calculate averages for analysis. That matches what you were seeking.
That would be fine; it didn’t have to display it in-game, just record it in some way.
Oh, yeah Fraps will do that
I rely on fraps for that. Badicam can also handle it. Just ensure it's enabled and the current FPS appears in a corner.
You asked for a version that doesn't display the live frame rate but instead shows an average value.
Explore this subject: It might be the solution.
Thanks.