I installed it yesterday and started having it chug through the Murderbot series I got in epub format. It seemed to be taking forever, but then I checked a system monitor and discovered it was using the GPU to do most of the work. So whenever my GPU-heavy screen saver kicked in, it slowed to a crawl.

At any rate, it was done this morning but then I forgot to bring the files to work, so I can't say at this point how good a job it did? It was a bit of a pain to install because it needed Python 12 and wouldn't accept Python 14 for some reason, and pyenv on my Mac is a bit of pain because it hates tkinter. Go figure. But I got it working in the end.