Partial Snapshot of Game Screen

Hello all! I have a snapshot taking class that I am using to take a thumbnail of something on screen. Previously this code worked fine and was taking a full-screen screenshot then cropping it to just what I needed. Now, however, the process appears to take the full screen and stretching it into the size that I'm providing for the partial shot. Below is the code in its current form. private void OnPostRender() { if(takeScreenshotOnNextFrame) { takeScreenshotOnNextFrame = false;

             RenderTexture renderTexture = camera.targetTexture;
  
             Texture2D renderResult = new Texture2D(renderTexture.width, renderTexture.height, TextureFormat.RGBA32, false);
             Rect rect = new Rect(0, 0, renderTexture.width, renderTexture.height);
             renderResult.ReadPixels(rect, 0, 0);
  
             imageArr = renderResult.EncodeToPNG();
  
             RenderTexture.ReleaseTemporary(renderTexture);
             camera.targetTexture = null;
         }
     }
  
     private void TakeScreenshot(int width, int height)
     {
         camera.targetTexture = RenderTexture.GetTemporary(width, height, 16);
         takeScreenshotOnNextFrame = true;
     }
  
     public static async Task<byte[]> TakeScreenshot_Static(int width, int height)
     {
         instance.TakeScreenshot(width, height);
  
         while (imageArr == null)
             await Task.Yield();
  
         return imageArr;
     }

And the call I'm making for it is: byte[] imageArr = await ScreenshotHandler.TakeScreenshot_Static(810, 810);

Since nothing, as far as I can remember, changed in the code.. I'm thinking this maybe an environment change that I missed. Hopefully someone has run into this issue before.

Thank you!