bob213 wrote:
Would not surprise me. We have an Amazon smart plug that loses it's wifi connection when the microwave is on and my laptop looses it's internet connection as well. They all operate on the same (or close to) frequency so the microwave must leak enough to disrupt the signal. Maybe your light is interpreting the wave as movement.
It may be possible to stop your interference:
If your WiFi router and laptop can operate on the 5 GHz WiFi band instead of the common (and often default band when you get them) 2.4 GHz WiFi band ... then switch your router and laptop over to the 5 GHz WiFi band.
The 2.4 GHz WiFi band is used by a lot of inhome WiFi "gadgets", so get off this band as much as you can for any and all WiFi equipment in your home - if your equipment and router are new enough to have 5 GHz capability.