Inconsistent Behaviour with Motion Controllers and Camera

I am certain others have encountered similar issues. First the unpredictable behaviour of the camera changing elevation has me baffled. Ive noticed the same behaviour even inside the Cliffhouse in Windows 10 Mixed Reality Portal. Somethings your viewing perspective may be submerged in the floor or you maybe floating above the ground. Is there a way to fixed this in my Unity Apps?

Motion controllers are a headache. Ive been trying to implement a basic laser pointer and the position is all over the place if you restart an app the emission point of the laser is never consistently in one place relative to the headset view. It needs constant recalibration on startup and is completely user unfriendly. Can someone point me to a decent demo sample that gives reproducible behaviour of the motion controller position as in the Cliffhouse or SteamVR (Not button presses as these are working fine).