Gigapixel resize giving random results

Latest version of Gigapixel is giving me very random results when resizing. No proportion changes, just simple resizing. Generally it roughly doubles the size regardless of what I select: x2 x4… Ideally I would like to specify a custom size, but this is when I get the most erratic results.

Please raise a support request at the main website.

What is this?
Misc Troubleshooting - Topaz Labs. ???

If you click on the blue callout you can raise a support request there or send to the email listed …

Thanks, currently e-mailing with support. Have a viable work around for the time being.