Getting the extender’s improved performance is equally important to the perfect Linksys RE6400 setup. But, to get that, it is critically important to take into account some consideration points and apply them to the network. That includes the best placement of the Linksys RE6400 extender, neither it should be too far from the router nor it should be too close. Clearly, the central location of your house is the ideal location for your extender. Additionally, there must be no metallic and electrical appliances closer to the extender that may cause signal interruptions. 

More than that, your extender must be having a strong connection to the router and to the devices too. So, check the wireless and wired connections often. In addition, the firmware version of the extender requires to be updated every time to offer its optimized performance. Also, the web browser of the device that you are using should be up-to-date. Lastly, you can change and set a different SSID network name and password to avoid unauthorized users. You can do this from the extender’s web management portal after going to the wireless advanced settings and security option. Keep in mind to make the password strong enough so that it will be hard to guess for external users. As a result, you will be able to get the extender’s better performance continuously.