It's so close! Please open the slideshow interval to 600 seconds - 900 would be better! I use other software for gesture drawing, that does exactly what Gwenview's slideshow does - but at intervals of 30s, 60s, 2min, 5min, 10min. That's literally the only difference. But Gwenview is FOSS and packaged with KDE desktop! I can code in a few languages, but I have no knowledge of Qt or the Gwenview project. Someone familiar with the code could just change a variable and DONE. Thanks!