I’m using the GE/Jasco dimmers with dimmable LED bulbs without issue. In one room, I only have 2 small LEDs on a given circuit and they won’t turn all the way off and also flicker when ramping up/down. I have found that Fibaro sells a “Dimmer Bypass” which is basically just a resistor to add a “dummy” load which should resolve this problem. Please take a look here for more information.