How to prevent or reduce game graphic glitches?

I am developing a Kinect Game and I am new to unity and C#.

There is a graphic glitch after loading to new scene despite using the Gameobject.SetActive(false) or destroy(gameobject).

I suspect it is the gesture reader script from the scene which is causing the problem. Does anyone knows how to prevent such glitch from happening while switching scenes? Tried searching for similar questions but to no available.