I have a red series dimmer switch hooked up to some LEDs with a neutral wire, and when I turn it on the lights flicker really badly for about 2 seconds before staying on. I have the ramp rate and dimming speeds all set to zero, so there shouldn’t be any dimming happening anyway. Also, if I use the SmartThings app to manually set the dimming level, I can put it at any level and I don’t see any problems.
As a side note, the LEDs stay on a tiny bit even when the switch is off.
It’s just two lights, but each light has like 20 LEDs in it. I just tried changing the min and max dim levels to a few different values and none of it helped.