You did great, my guy. It is by far the best settings menu I've ever seen in one of these VNs, for so, so many reasons. Unlike just about every other VN I've ever played, I was actually able to configure literally everything I wanted perfectly. Auto is actually usable, volume is configured just to my liking, transition died too, it's great. Though I do wish "Global Transitions" would have some kind of tooltip on Android (dunno if it does on PC?) because it's pretty unclear what that actually does.
Sorry for late reply. I just didn’t know how to better word it at the time and never got back to changing it. I will add better and more detailed descriptions with new UI. That setting makes transition speed apply globally, by default it only apply to single image transitions with default timing, if global is enabled that makes it apply to every transition, even with non-default timing or sequence of images.