Here's why: All the wireless devices in your home share your WiFi connection. So the number of devices running at the same time impacts your internet speed significantly. The more devices you start adding to the network, the less speed you'll get when working from home on your laptop, streaming on a tablet, etc. Gaming systems, video streaming devices and smart TVs, and a number of other smart home systems can eat up a significant portion of bandwidth. In addition, many connected devices are always on and may frequently run updates in the background that you aren't aware of, all of which can slow speeds down.