I'm having an issue in a house I bought last fall where I'll be sitting in a room and the lights will flash on and off so fast it feels seizure inducing. I don't think it's every bulb every time this happens, but I'm not sure. For MOST of the bulbs in the house, this happens just the once every so often. I've tried changing bulb brands in some fixtures (all LED) but with no luck. It still happens but in varying degrees. This is in multiple rooms, on multiple circuits, on both sides of the panel.
I had an electrician look at it and he basically said to ask the power company to come out and check the neutral connection. They did that, still no luck.
I installed a hard start kit installed on my AC compressor and that seems to have helped some. There's also 6 fridges/freezers in this house (some small beverage ones) so tracking devices kicking on and off is incredibly tricky.
The one room I can get consistent flicker is in our master bathroom. We have a Toto washlet with heated seat and some "vintage style" LED bulbs around the vanities. If the Toto washlet kicks on (I imagine it's the heater causing this), these vintage style bulbs will flicker like crazy. This room is consistent, everywhere else is super intermittent. I'm thinking the bathroom is its own separate issue, but wanted to include this just in case.
Is there anything I can do to try and track down the source of this? Anything I can measure to show my utility company an issue on their side? My electrician basically said I'm out of luck until the transformer gets replaced but the occasional flicker is extremely jarring.