Vsync isn't actually working, even while the game is running fluidly at 60 FPS there's significant tearing. I think this is just the upstream Unity bug where vsync is disabled when a compositing window manager is detected. It's disappointing because all the non-Unity games I have vsync perfectly - so maybe another nudge in Unity's direction to fix vsync with composite would be helpful.
I'm running the game on Ubuntu 14.04 with an Nvidia GTX 770 and 331.38 drivers.