I would definitely move the hub, maybe get a longer cat 5.
But hey, reading this actual just helped me.
About a week or so ago I moved a lot of my hardware. I changed the location of my router, modem, ST hub, and Phillips hub from downstairs to an upstairs room.
Last week I had a huge problem with my zigbee devices. I got it working again but they have been acting weird.
After reading this I realized that I have put my ST hub literally less than 2 inches from a very powerful router.
I will be moving that today!
I hope that fixes your problems. Not sure about the motion sensor, I’ve only found I’ve sensor that I trust, follow this link to read all about it.
Is the GE switch a Zwave our zigbee switch? I’m betting the door sensor is zigbee as well.
Please let us know if moving your hub helps.
Also, after you move it, unplug it and remove the batteries. Let it sit for at least 15-20 minutes before restarting it. This amount of time is needed for the zigbee devices to freak out and rebuild the mesh network.
Hope this helps.