I had to use 4088 to make the lines disappear, so I don't know if it's got something to do with the monitor you're using, or what. Anyway, a little experimentation should find the answer!
Quick question: is the FOV just the base FOV for the viewer? It feels like that's the case, but I'm not exactly sure what it's changing.
Thanks for the great software! Since cubic pano out stopped working in the 2017, I was scrambling for a solution, and this is not just that, but also a great improvement!