Weird Render Artifact

Hello, I'm not using the beta as I am paranoid of unstable builds, but needed a repeating tile/sprite so I used a tweaked version of a script from a guide to produce the effect. However, at certain zooms and at random, there will be a green line, which I'm assuming is the grass tile repeating again downwards on a minuscule level, between the grass layer and the dirt layer, in the scene view and/or the game view.

Here's a picture of it:


Here's the script:

Spoiler

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class RepeatingTile : MonoBehaviour {
6.     public int textureSize = 16;
7.  
8.     void Start() {
9.         var newWidth = transform.localScale.x / textureSize;
10.         var newHeight = transform.localScale.y / textureSize;
11.  
12.         transform.localScale = new Vector3(newWidth * textureSize, newHeight * textureSize, 1);
13.  
14.         GetComponent<Renderer>().material.mainTextureScale = new Vector3(newWidth, newHeight, 1);
15.     }
16. }
17.  

 

Try using your character and walk. if it still does it change your scale to an even number.. like dont use 1.2 use 1 or 2..

 

And why do you need a repeating tile effect? why dont you use your tile and snap them to position?