Customization in the Wavlink ac1200 extender's advanced settings will allow you to get its optimized performance. So, once you complete the Wavlink ac1200 repeater setup, access its wireless settings. Either use the web interface or the WiFi app and select the management window. Once reached there, access the options and choose the Frequency Bands option first. Activate both bands and choose the channels that are less used. Further, choose the Security Settings and change the network password to make it safe from unauthorized access. Also, change the extender login password to safeguard the settings portal. But, make sure to set strong passwords for both so that the network will be secured. More than that, enable the robust security encryption that is the WPA3 and click on the Save button. In the end, update the firmware of your extender if there is a new version available. Here it is advisable to repeat the same process frequently or whenever you find the network’s performance sluggish.