Just installed a new HS220 Dimmer (v2) on firmware 1.0.3. LED bulbs in bathroom vanity fixture.
I noticed that when I press the physical button on the switch to turn the light on, there can be anywhere from a 0.5 to 2 second delay before the light comes on. When turning off the light, the delay is usually 0.5 to 1 second. It seems like if the light is turned on immediately after turning it off, it turns on quicker, and if the light has been off for a while, i.e. overnight, it takes longer.
This is not the light "fading" on, I have both the "Fade On" and "Fade Off" settings set to "Instant".
Also, if I set the "Double Tap" feature to "Instant On/Off" the light turns on and off instantly when double-tapping the physical switch, so it doesn't appear to be physically incapable of turning on or off instantly.
Is this normal behavior? I have about 12 other dimmers and switches I just bought to replace a bunch of Wemo dimmers and switches and want to know if this is expected behavior before I decide to do all that work or maybe return these.
I contacted support through live chat online and this was the response. :-/