Check speed on speedtest.net as the control. Go to internet browser and type 192.168.1.254. Select ‘Wi-Fi’ from that page. Access Code (if necessary) is on back of router. *Optional* Change Network name and password. Click advanced options. Make sure channel bandwidth is at highest setting for 2.4 and 5.0 MHz settings. Click magnifying glass in upper right hand of Mac. Search ‘wireless diagnostics’. do NOT run wireless set up wizard. Click ‘Window’ —> ‘Scan’ in upper left hand corner of Mac. Click ‘Scan Now’. Look on left side for ‘Best 2.4 GHz channel’ and ‘Best 5 GHz channel’. Go back to advanced WiFi options and select best channel from drop down. May currently say ‘Auto’. Run SpeedTest.net again for new speeds