If you have the oculus lobby version installed and you then install the steam version and then try to fly the oculus lobby version (without the steam version running or steam running just run the oculus lobby version) the framerate is in the 20's and the screen sticks really bad (as you turn your head to pan your view the screen shakes like crazy)..not until you uninstall the steam version is the oculus lobby version flyable again.
Once the steam version is uninstalled everything goes back to normal. So seems like there is some sort of wierd contention or something.
they do not appear to be friendly on the same box from the oculus lobby version side of things.
