public void setEnabledStabilization(boolean stabilize) {
        this.stabilize = stabilize;
    }
Enables the stabilization of the shadow's edges. (default is true)
This prevents shadow edges from flickering when the camera moves.
However, it can lead to some loss of shadow quality in particular scenes.

 @param stabilize  <code>true</code> if stabilization has to be enabled and <code>false</code> otherwise.
jme3-vr/src/main/java/com/jme3/shadow/DirectionalLightShadowRendererVR.java