garageCube

on mac, type this onto your terminal, then relaunch MM:
defaults write com.garagecube.MadMapper logFPS 1

set it back to 0 to remove fps

on windows type in command prompt:
REG ADD HKCU\SOFTWARE\Garagecube\MadMapper /f /v logFPS /t REG_SZ /d 1

at any time you can reset mm to factory defaults, in the file menu

I've been looking for this feature for years and I am very stoked that a simple terminal command will display it. Would be killer to have it as a native option in MM.

you're right we should include it officially in the preferences, since I'm giving you the info anyway ...

Hell yeah Franz!

included in 4.0, click the little gear button on the right side of the output preview