Making a Gui Texture Continue To Rotate While Loading a Level

I have a rotating gui texture and it works completely, except for whenever the level is loadings (which is when I need it). How can I get a gui texture continue to rotate while the level is loading (I already tried: Application.isLoadingLevel). Here's my code for your convenience (I found this somewhere else [I didn't write it] and slightly modified it to my needs).

EDIT: I have an object that doesn't get deleted when going to another scene, but when I go back to that seen there is a duplicate. I know why this happens but how can I fix it? (It has the same name and everything, so it's pretty confusing).

 using UnityEngine;
 
 [ExecuteInEditMode()] 
 public class RotatableGuiItem : MonoBehaviour
 {
 public Texture2D texture = null;
 public float angle = 0;
 public bool spin = true;
 public Vector2 size = new Vector2(128, 128);
 
 //this will overwrite the items position
 public AlignmentScreenpoint ScreenpointToAlign = AlignmentScreenpoint.TopLeft;
 public Vector2 relativePosition = new Vector2(0, 0);
 
 Vector2 pos = new Vector2(0, 0);
 
 Rect rect;
 Vector2 pivot;
 
 void Update()
 {    
     if(spin)
     {
         angle++;
     }  
 }
 
 void Start() 
 {
     UpdateSettings();
 }
 
 void UpdateSettings()
 {
     Vector2 cornerPos = new Vector2(0, 0);
 
     //overwrite the items position
     switch (ScreenpointToAlign)
     {
        case AlignmentScreenpoint.TopLeft:
          cornerPos =new Vector2(0, 0);
          break;
        case AlignmentScreenpoint.TopMiddle:
          cornerPos =new Vector2(Screen.width/2, 0);
          break;
        case AlignmentScreenpoint.TopRight:
          cornerPos = new Vector2(Screen.width, 0);
          break;
        case AlignmentScreenpoint.LeftMiddle:
          cornerPos = new Vector2(0, Screen.height / 2);
          break;
        case AlignmentScreenpoint.RightMiddle:
          cornerPos = new Vector2(Screen.width, Screen.height / 2);
          break;
        case AlignmentScreenpoint.BottomLeft:
          cornerPos = new Vector2(0, Screen.height);
          break;
        case AlignmentScreenpoint.BottomMiddle:
          cornerPos = new Vector2(Screen.width/2, Screen.height);
          break;
        case AlignmentScreenpoint.BottomRight:
          cornerPos = new Vector2(Screen.width, Screen.height);
          break;
        default:
          break;
     }
 
     pos = cornerPos + relativePosition;
     rect = new Rect(pos.x - size.x * 0.5f, pos.y - size.y * 0.5f, size.x, size.y);
     pivot = new Vector2(rect.xMin + rect.width * 0.5f, rect.yMin + rect.height * 0.5f);
 }
 
 void OnGUI()
 {
     if (Application.isEditor)
     {
        UpdateSettings();
        spin = true;
     }
 
     Matrix4x4 matrixBackup = GUI.matrix;
     GUIUtility.RotateAroundPivot(angle, pivot);
     GUI.DrawTexture(rect, texture);
     GUI.matrix = matrixBackup;
 }
 
 public enum AlignmentScreenpoint
 {
     TopLeft, TopMiddle, TopRight,
     LeftMiddle, RightMiddle,
     BottomLeft, BottomMiddle, BottomRight
 }
 }