VCam problem

I am trying to make the VCam follow the player but when I increase the player speed the objects ( a bar showing some stats about the character ) attached to the VCam starts shaking . The code in the VCam is :
onClipEvent(enterFrame){
this.swapDepths(this._root.getNextHighestDepth());
_x += _root.player._x - _x;
_y += _root.player._y - _y;
}
What I want is that the player stays on the center without being affected by its speed and objects inside VCam dont shake . Please help .