> [,,,] Make sure your Poll interval is set
The recent Hue API has full push features via Server Sent Events. Designed specifically for home automation system Intergrations. No polling. Very little latency. Hopefully the C4 Bridge driver can be updated to use this. See here. Actual API Docs are behind their auth prompt. Here's a simple Github example in Node.
> The T3 & T4 have the functionality, it is under a long press of the bulb icon > color
Indeed!! Long Press. Confirmed on T3 and T4 devices. Thanks.
> What kind of switch are you binding it too?
I'm using the C4-SW120277. Set to "Use as a 2 button keypad", with the same connections you show. This means I need a custom macro to set power, as turning the keypad on won't necessary power up the Hue lights. I end up adding the script to make this foolproof - every time it's turned on, the lights should turn on. This includes after a power outage, or whatever.
("Island Pendants - Load" is the name of the physical switch, which is hidden in the navigators. The "Island Pendants" is the name of the Hue Switch.)
Connections are the same as you showed - from the physical switch to the Hue Light.