When using a control surface with passive sliders, and you add/remove tracks, the slider positions will no longer correspond to the actual value as seen by Ardour. That’s understandable.
With ‘lazy slider’ I mean a settable feature so that Ardour only changes the value when the controlling slider crosses the current value. For example: Ardour setting is 60, slider is at 40, when moving the slider up nothing changes until it reaches 60, and then Ardour starts moving with the slider.
This greatly reduces the chances of screwing up slider settings. My Boss ME25 guitar pedal has this feature (with turn knobs that control several settings) and it has proven to be very handy. Citing the docs:
When you call up memories, an effect’s parameters may not reflect the actual position of the control knobs. You can set how the parameters behave when the control knobs are moved in this state.
- The value changes immediately as the knob is turned
- The value changes once the knob is turned past the position corresponding to the currently set value.