How can I view my FPS in Diablo 3?

So, my gameplay is a little bit pokey at the highest resolution/detail levels, and I'd like to tweak things to get better performance, but it's difficult without being able to objectively measure my framerate. How can I display it?

(This is on a Mac, so using FRAPS is out.)


Solution 1:

On Windows, you can press Control+R to toggle framerate display. On mac you can use Command+R

Solution 2:

command R also works for mac for showing FPS