Topaz Photo AI is made to work with smaller faces. If the face takes up the entire screen then the application will detect the face and break it up into smaller sections to improve.
No, keeping it set to 3 faces gives a bad result. After selecting just the middle border covering the eyes and mouth the result was a bit better. But definetly not as stunning as another bad quality photo with a face filling almost the whole photo. However that one was taken from the front and the head wasn’t tilted.