[NaiveBayesian]

For me it showed 400 fps in the top left corner and my laptop fans spun up immediately as well. Seems to render frames continuously rather than waiting for the screen to refresh. Would probably be much less load when limited to 60 fps.

[Rohansi]

You need to click the "fps" text for it to actually show the FPS value (it'll be green). The 400 you saw was something else.

[NaiveBayesian]

Ah I stand corrected. Thanks for pointing that out!