Hi and welcome to Arturia forums.
Are you saying you have cliks, when you change a preset where no sound at all like a reverb is playing?
If a preset still play, then you can hear a click. This click (or any other clicks you may have) can only be avoided by muting the DAW track while you change preset, or something like that. It could be nice, if Arturia could do something about this somehow.
There are also clickings when changing presets to a Stage-73 V preset, and this i consider a bug. (It also clicks in the full Stage-73 application when you open the application.)
Perhaps there are more, but i can't recall by now. Perhaps you can add something.
About latency if this is what you mean: Preset change is'nt instant. Time for a preset to load can vary. Sometimes i think it take too much time, but there are many informations to be loaded.