If you use this feature to detect that all devices are slow to network, then you need to reset or redeploy your wireless router, or call your network service provider. If it's just your computer's networking is slow, then you know that you need to restart your computer or perform a screening.
With the Google WiFi app you can see the speed of networking of various devices. In an interview with CNET, Alex WiFi product manager Google King said: "With more and more devices need to be networked, users get a reliable WiFi network in the home environment has become a huge challenge. When the WiFi speed slows down , obviously there is a problem somewhere."