To be fair, John Carmack almost certainly would need to sign off on any tracking solution that Oculus releases, and he takes FPS and latency issues very very se

To be fair, John Carmack almost certainly would need to sign off on any tracking solution that Oculus releases, and he takes FPS and latency issues very very seriously. Keep in mind Oculus has had a "stand alone" headset available earlier than pretty much everyone and is one of the last to release a 6DOF solution, so there's no reason (on the surface at least) to suggest that they didn't take the time necessary to make sure their solution performs well.