Sorry to hear that! This might be due to the retina resolution your computer is trying to run the game at.
If you hold down the Option key while launching the game, you'll be given a configuration dialog. Try lowering the anti-aliasing setting (on the right), and if the frame rate is still too low, try selecting a non-retina resolution. For your MBP model, 1440x900 would be a good one to try.