The router stores all your WiFi networks settings. to change these settings . You should login to your WiFi Router configuration page to access router settings.
Extending WiFi range can be beneficial for a variety of reasons. For starters, by increase the range you can cover a larger indoor and outdoor space […]
Generally, the interference issue is the most common reason of WiFi slowing down at all. Fix that by changing the WiFi channel to the least crowded one.