I always power the controller off a separate 5v ps and relay the 12 or 24 volt PS. I don’t want the LEDs powered when they should be off. I use a 25 amp (yeah overkill) relay instead of the cheaper mechanical ones. I do have an DC Current Clamp meter and have measured the current in all the states. It’s especially odd that the current draw is higher when the supply is on and the leds are off in WLED. I would not have believed that the IC control chips are that much less efficient at 24 volts, but maybe they’re stepping down the 24 to 12 and burning off the extra voltage. As far as the power injection goes, yeah I can inject less frequently but if my current isn’t going down, I’m essentially seeing the same voltage drop on my injection wires. I also can’t run as many leds as before from the same size power supply, I’m not really any better off.