Forever processing in both preview and export for Regenerative AI recovery

I’ve tried a few times in different version updates since I bought this and Photo AI. I never had problem with Photo AI but thought Gigapixel will do a better job in regenerating details but I constantly battling with the program when it gets stuck. Is there anything I can do? I am on 8.0.2 at the moment and I’ve tried 8.0, and 8.0.1 all the same.