Some poor quality LED lights have a strobe effect (wave your hand in front of the light source and it looks like your hand is in time lapse). This happens with some lightbulbs, often with Christmas lights and with these lightbulbs too. I can't stand the strobe effect so we took it out and brought it back. I really wish it wasn't lightning! The light looks good although it is slow to install. I could handle it if the diodes weren't strobing.