Fixed aspect ratio in image effect helper too

Assets/Scripts/Fsr3UpscalerImageEffectHelper.cs

@@ -52,7 +52,7 @@ namespace FidelityFX
             float upscaleRatio = Fsr3Upscaler.GetUpscaleRatioFromQualityMode(_imageEffect.qualityMode);
 
             // Render to a smaller portion of the screen by manipulating the camera's viewport rect
-            _renderCamera.aspect = (_renderCamera.pixelWidth * originalRect.width) / (_renderCamera.pixelHeight * originalRect.height);
+            _renderCamera.aspect = (float)_renderCamera.pixelWidth / _renderCamera.pixelHeight;
             _renderCamera.rect = new Rect(0, 0, originalRect.width / upscaleRatio, originalRect.height / upscaleRatio);
         }
     }