If you encounter artifacts or unnatural results, first verify that your source image meets the recommended criteria: clear facial features, good lighting, and minimal existing compression artifacts. Heavily filtered, extremely low-resolution, or very blurry input images can challenge even advanced AI upscalers. Try reducing the scale factor—sometimes 2x or 3x produces more natural results than pushing to 6x with marginal source material. If the issue persists, consider testing
Portrait Enhance as a pre-processing step to clean up the image before upscaling, or explore alternative upscalers like
Lucidflux Upscaler that may handle your specific image characteristics differently. The JAI Portal pay-per-use model allows you to experiment with different approaches without subscription commitment, helping you find the optimal workflow for your particular images.