Despite what should be a strong WiFi signal, my X won't upload the latest maps. Is there a sweet spot where I should place my wireless router in the garage with my Model X for best results? There must be one optimum place, be it in the car, in front, behind, or something. Anyone know? The Tesla barely shows a weak signal when the router is in the adjacent room, even while my laptop connects perfectly as I circle around the car rapidly loading YouTube videos via the same WiFi.