LYT8266 lamp with UDP autodiscovery and "instant" on
This Lyt8266 sketch tries to power on the light at the specified white value as soon as possible, connects to your wifi AP and starts sending broadcast packages detailing its IP and listening port so you can use the accompanying python script to discover the lamps and add them to you app / dashboard etc.
Switchting the lamp to on still takes ~2 seconds somehow.