Camera movement causeing jittery sprites.

I'm working on a script that will move and offset my camera, based on my characters position. he is a 2d character being animated on a sprite sheet, when the camera is NOT moving he plays fine but something in my code is creating what appears to be a single frame stutter, until you move to the far end of the screen where the tracking stops and he renders fine again.

 using UnityEngine;
 using System.Collections;
 
 public class test_cam : MonoBehaviour {
 
     float offset;
     float offset_maxL;
     float offset_maxR;
     private PlayerController p;
 
     void Start () {
         p = GameObject.Find("Player").GetComponent<PlayerController>();
     }
 
 
     void Update ()
     {
 
         offset_maxR = p.transform.position.x + 99;
         offset_maxL = p.transform.position.x - 99;
 
         if (p.goingRight == true) //going right
         {
 
             offset += 7f;
 
             if (offset > offset_maxR)
             { offset = offset_maxR; }
             
         }
         else if (p.goingRight == false)//going left
         {
 
                 offset -= 7f;
                 if (offset < offset_maxL)
                 { offset = offset_maxL; }
         }
         else //still
         { }
 
 
         GameObject.Find("Main Camera").transform.position = new Vector3(offset, -1.71f, -131.19f);
         
 
     }
 }