really slow, any tips??

hiii i just got topaz to improve quality for very short edits (~10 seconds or so) but it is being INCREDIBLY slow. it says it will take 3-4 hours just to give me a 5 second preview of my clip and the fps sits at 0.0, 0.1 if im lucky. i never have anything else at all running in the background and ive even tried worth very minimal filters. i use a macbook pro with 8gb ram. is this normal?? is there something i can do to improve it? i paid so much for it because i knew it produced good results but at this point i can’t even access the results and im really disappointed.