Building out a mother in law studio and ran into a weird issue today I haven't seen before. Currently use a swithlinc for the outside light and keypad with inlinelincs for bathroom overhead appliance (light, heat, nightlight and fan) I also have two rows of built in LED recessed ceiling lights on standard Leviton dimming light switches. (Not Insteon). Also have a phase coupler installed at the sub-panel on it's own 20 amp breaker. On the sub-panel the LED recessed light are on their own breaker, the bathroom is on another breaker.
When I toggle on any of the functions on the bathroom keypad (Light/fan) I get a flicker in the LED recessed lights. Don't think its a load issue as the recessed LED use about 200 watts total and the bathroom light/fan is around 30 watts. It's like the Insteon signal is causing interference in the LED driver for the recessed lights, or the Leviton dimmer, causing a momentary flicker. Also occurs when I use the switchlinc for outside light.
Any ideas/suggestions as to what is going on and how to resolve the issue?