One thing that REALLY bugs me is that they STILL haven't addressed their hopeless inability to preserve EXIF data. Really primitive. It has become the merest routine for me to have to manually repair the EXIF data on a Topaz-processed image with ExiftoolGUI. It's an annoying extra step, and no other modern software needs it, only Topaz.
With my 3 Sony cameras Topaz Photo AI preserves all the EXIF data right down to the finest detail. Maybe with your camera it is different.
Photo Ai only loses a couple of entries from the 'Exif' category of my Sonys when ExifToolGUI is used to examine the files. However, the 'Maker' category, which has a lot of useful info, gets completely obliterated.
PhotoLab also loses a couple of entries from the 'Exif' category but preserves most of the 'Maker' category.