Weird. I can understand keyboards doing that if they’re a membrane but a mouse shouldn’t be affected unless it’s got a pad under the button!
Yep. I get the lights overhead flickering if I also run the microwave! 😛
One laptop has W10 and cannot be upgraded to 11 for being too old while the other one is currently on W11. I haven’t had the chance to check the video ports since the new monitor was setup but will do so! The newest laptop may only support USB-C monitors, I’d need to check. The new monitor doesn’t use it and likes DisplayPort for access to all of its features. 🙂