Alter the scale of head-motion for VR

I am working on a VR project using UE4 and the oculus rift DK2.

When I test the headset I notice that when I move my head to the left and right it does not seem to affect how far the camera actually moves by very much. This is kind of disconcerting to me because if i move my head to the left and right in real life it makes a much larger difference.

I’ve been looking and I can’t seem to find any details on how to change the motion scale of the head-tracking for the Oculus.

What am I missing here?