why 2d gameobject used as background jittering?

Questions & Answers
1

my game is simple 2d game in unity 4.2.1f. In my game main camera is orthographic and size is 100. Main camera is still there is no script with camera. I move just the background and its jittering.I use simple translate in code.Here is the code sample…

function Update () {

		var something : GameObject;
		something = GameObject.Find("Game manager");
		speed = something.GetComponent(gameSpeed).gamingSpeed;

	transform.Translate(Vector3.down * Time.deltaTime*speed);

	if(transform.position.y<=-200){
	var plane3 =GameObject.FindGameObjectWithTag("plane3").transform;
	transform.position = new Vector3(transform.position.x,plane3.position.y+200,transform.position.z);
	transform.Translate(Vector3.down * Time.deltaTime*speed);
	createCoin();
	
	}
	

}

how to solve this?
thank you.

2

It could be because you have your variable declaration and the GameObject.Find() function (which is not performance-friendly) inside of the Update() function, which runs every single frame. Depending on your computer and the size of your project, this might be causing some stuttering that you say you are experiencing.

Why not put your variable declaration up at the start of the class, define it with the Find() up there as well, and only do the translation inside of Update()?