This may sound like a dumb question but we are having TMCC problems on our modular layout that we didn't have before we installed a series of ceiling light fixtures with double LED tube lamps. We're going to see if adding some "ground plane" will help but I'm wondering if the LED fixtures are generating a signal that is interfering with the TMCC signal. I know its far fetched but we are trying everything to figure it our.
I should add that when we are not using the layout in a remote location we set it up in our clubhouse. The layout is about 10' wide and about 20' long