My opinion: 2.6.1 was a rough release. You can download the older 2.6.0 version from this post: Video Enhance v2.6.4 scroll just a bit down and look for the v2.6.0 version. It seems much more stable to me.
I have currently asked Topaz to refund me the difference between what I paid a few weeks ago and the 99.99$ Black Friday sale price. Their support site, until yesterday, said that they would refund the difference if the product you bought goes on sale within 30 days of purchase. They removed that reference sometime in the last 24 hours but oddly left the link in the table of contents at the top of this page. Topaz Labs Refund Policy - Topaz Labs
Edit: Topaz already approved and processed my partial refund. Their support is FAST on a day when they are likely overwhelmed with new users due to their sale.
Anyways, for 99$ I’m willing to jump through a bunch of ffmpeg hoops to get the app to do what I need it to do. Someone Private messaged me a bunch of ffmpeg steps to split up my file into smaller files that I can process individually and recombine. Supposedly I’ll end up with a better output anyways this way. But I wish I could pay Topaz Labs to simply include those steps into Video Enhance AI for me. As it’s time consuming and seems error prone. I’m especially worried I’ll end up with audio out of sync when I start down this path.
Good luck to you.