Blood Particle Engine Makes Lag, URGENT

programming flash
1

I was working on a little particle engine for blood in a project im working on and i can see it being versitle enough to be good but when i import it into a test environmet it causes a little fps lag i was wondering if you as3 coding genius’s out there could help me out.


package {
    //
    
    import flash.display.Sprite;
    import flash.events.Event;
    
    //
    public class mc_Blood extends Sprite{
        //
        private var xTarget:Number, yTarget:Number;
        //
        public function mc_Blood(gunRotate:Number, xSpawn:Number, ySpawn:Number, force:int):void{
            //
            cacheAsBitmap = true;
            var i:int = 0
            while(i<force){
                var randomNum = ((Math.random() * 10)-5);
                alpha = Math.random();
                cacheAsBitmap = true;
                var radia = Math.random();
                scaleX = radia;
                scaleY = radia;
                x = xSpawn + randomNum;
                y = ySpawn + randomNum;
                xTarget = (Math.random() * 10);
                yTarget = (Math.random() * 4);
                rotation = gunRotate + randomNum
                i +=1
                    addEventListener(Event.ENTER_FRAME, enterFrame);
            }
        }
        public function enterFrame(e:Event){
            alpha -= 0.005
            scaleX -= scaleX / 100;
            scaleY = scaleX
            //
            this.x += xTarget;
            this.y += yTarget;
            yTarget += 1;
            if (alpha<=0) {
                removeEventListener(Event.ENTER_FRAME, enterFrame);
                stage.removeChild(this);
            }//if{}
        }//onTick{}
                
                
    }//class{}
    
}//package{}

Ok thanks guys if you can see where my lagging problem is then can you hlep me out.