A. When upscaling an image, try using the 'Retouch' tool before applying the upscaling feature. This allows you to manually correct imperfections that may be lost during the upscaling process. Focus on areas that need enhancement and save your edits before upscaling.
B. Consider using a different app for upscaling that allows for more control over imperfections. After upscaling, you can import the image back into Facetune for further editing.