It should be pretty obvious when adjusting those input/sens settings IME, so maybe something is wrong? I wonder if there might be some global setting that is toggled weirdly? I haven't dug into that stuff too much as I haven't needed to...
Do you play with pick or fingers? Do you generally have a pretty bright tone from the bass? Most pedals track the fundamental frequency of a note, so anything you can do to minimize upper harmonics will improve tracking (playing on the neck pickup, plucking/picking closer to the neck, lowering the tone control, muting techniques). Maybe just from years of playing with a Boss OC-2, but I've gotten used to playing lines in the upper register (above the 5th fret) when using synth pedals as there is more fundamental frequency in that register that tends to give more consistent tracking. I've mostly used my C4 with my Rickenbackers which have a pretty strong/deep neck pickup tone and seem to track pretty well, but with roundwounds I definitely need to play a little more carefully and favor more neck pickup. I've also used a P-bass with it to good effect, but it has flatwounds.
One thing with the community presets is that you have to adjust the sensitivity for each one to fit your bass (they are saved with whatever sensitivity settings the creator used). I kinda wish there were a global sensitivity setting so I could browse the community presets without constantly having to tweak just to trigger things right (but of course part of the beauty is being able to fine-tune/customize how each envelope opens, etc, so I understand why its not a global setting).