Something is causing some of my LED lights to flicker in three locations. Here are two examples:
There are a few peculiar aspects.
The lights flicker sometimes and not at other times. Each time the flicker period is prolonged. I would say the lights flicker about 30-40% of the time.
The lights flicker at different "flicker frequencies" as you can see in the videos. The flicker frequency also varies from time to time.
There are three different rooms/circuits where the LED lights flicker. (They don't flicker in other rooms/circuits.) In each of the rooms, the light bulbs are of a different brand. There are 4 brands in total: Torchstar, Feit Electric, Hyperikon, Philips.
Each of the three rooms uses a different kind of switch: Lutron dimmer (DV-600P), Lutron dimmer (DVW-600PH), and a dumb switch.
The flicker sometimes stops if I replace one of the lights on the switch with an incandescent bulb.
In one of the rooms, I have two sets of lights on two different switches, on a single circuit. Occasionally one set flickers more than the other.
A bad connection anywhere along the path is out of the question.
Any insight would be greatly appreciated!