The whole scene moves and tries to follow my head movement

I made an empty scene on put a cube in the center, and I hit play and stand in the center with my Oculus on. If I move to the left about 1 foot, it only moves my view of the cube by like 80% of 1 foot. For the other 20%, the scene shifted to the left alone with my head movement. Another example is if I try to walk to the other side of the cube, suddenly the thing has shifted in the same direction I'm walking and now I have to walk an extra step or 2 to get a view of the other side. In fact, if I just try to stand still, everything appears to be jittering along with my slight head movements.

How do I get everything to keep still?

Note that I'm well inside the guardian box and I dont have this problem when playing other Oculus games.

Edit: Actually I was able to reproduce this in other Oculus games by putting my hands up to block the sensors. So I guess thats it. I need a 3rd sensor!

Thank you for your help!
Randy