H601C Lights Flicker

I have four H601C Smart Retrofit Recessed 6 inch lights in my living room. After being on for a bit, they will began to flicker off then on fairly slowly occasionally. Sometimes it is just one light, sometimes it is more

When I open the App they are non responsive until I toggle them on and off and adjust the settings. After that them seem to work for the most part, but sometimes the flicker returns after 30-60 minutes. I have them set to both Bluetooth and WiFi control.

Any suggestions of what to try to resolve this very annoying problem?