Horizontal lines in video at night

I have a brand new ring doorbell generation 2. Just installed. Video works fine day and night, until at night when my security floodlight turns on. The video recording goes from black and white to colour. But in colour the video has horizontal black lines across it.

Battery is fully charged and WiFi is very strong.

Can anyone advise / help?

Hi @user26266. I would try factory resetting the Doorbell to see if that helps. To do so, you press and hold the setup button for 20–25 seconds and then continue with reconnecting the Doorbell to your wifi, since the reset will make it fall offline. If you have tried this step and are still having the same concern, give our support team a call at one of the numbers available here for further assistance. If you are outside of the US, please visit here to see how to contact support.