Works too well (high fps + high res)

[FreakTheMighty]

First thanks for the library. I'm running the self titled example and finding that despite setting the frame size to 640,480 and the frame rate to 60, the example is reporting 100 fps. I am sort of inclined to believe it, it looks hyper smooth. Nonetheless, if we set the frame rate to 60 it seems like it should run at 60.

The second issue I'm seeing is that when I decrease the resolution to 320x240 I don't get any frames, just white.

Lastly, If I keep the frame size at 640x480 and bump the fps to 180, the frame rate slows to around 60.

I'm on a new macbook running OS X 10.9.4