ofxEdsdk Live View frame rate

I’m starting a project using ofxEdsdk with a Canon Rebel t4i for OSX. Running the example application, with resolution 960x640, the frame rate seems to cap out at 10 fps, with bandwidth wavering around 2 MiB/s.

I’ve read posts here related to this, and I get the impression that even via USB 2.0, I should be able to get a higher frame rate coming from the camera. I’ve tried the application on a few different machines and performance is pretty consistent, so it makes me think I should be looking to the code for answers. Is there anything I can look at to bring the frame rate up? Is performance affected by any of the camera settings?

Thanks in advance for any advice!