I have Phillips Hue and Sengled lights at home and I usually disable the "easing" animation on them to reduce the perception of time delay when I push the button... It is maybe 100 of ms of perceived latency I can subtract.
It help a lot in that "computer user bill of rights" issue that you start to worry at some point that the button press wasn't registered and might then mash the button with unpredictable effects.
(e.g. you might get more customer satisfaction from a crosswalk button that doesn't do anything at all except 'click' instantaneously)
Funny, because I purposefully bought dimmer switches for bathrooms in my house that added a bit of ramp up time when turning lights on! (Makes it less jarring to turn on the bathroom lights at 2am with just that fraction of a second)
It help a lot in that "computer user bill of rights" issue that you start to worry at some point that the button press wasn't registered and might then mash the button with unpredictable effects.
(e.g. you might get more customer satisfaction from a crosswalk button that doesn't do anything at all except 'click' instantaneously)