No problem if using CPU processor but takes lot of time.
Problems when using auto and specifically the graphic card
It is my business PC so I cannot update the program to often, if you wonder about the versions
Please visit this page, select your operating system (Windows) and click “Find Your System Profile”. Send me the system profile so I can check your system specs. Topaz Photo AI System Requirements
We can try updating your graphics driver to see if that changes the processing behavior. I’d be curious if updating Topaz Photo AI to the latest v1.4.2 still has the artifact.