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Before we alter your router’s configuration, you’ll need to download a utility to change the settings. Apple’s AirPort Extreme routers offer both iOS and Mac OS X apps for administering your router. For the purposes of this article, we’ll use the AirPort Utility app on an iPhone. If you have another brand of router, check your documentation for information about the utility. Most routers offer a web-based utility which is served directly from the router.
If you don’t have the AirPort Utility installed on your iPhone, go to the App Store and search for “AirPort Utility”. Tap on “get” to install the app.
Before we start changing settings, it’s a good idea to check if there are any firmware updates for your router. These aren’t released often, but they may fix defects that slow down your network.
Launch the AirPort Utility app and tap on the AirPort Extreme router icon.
A screen with basic information about your router will appear.
Tap on Enter Password and type in the admin password for your AirPort Extreme router, then tap OK.
You’ll see a screen with more specific information, including your IP address and firmware version of your router. Tap on Version to check for firmware updates.
Follow the on-screen instructions to update your AirPort Extreme’s firmware if there’s an update. Your router will restart after the firmware is installed. Try running Speedtest again to see if there is any improvement.
The next step in router configuration is to split the 2.4 GHz and 5 GHz bands into two separate networks. This will prevent Apple TV from connecting to both bands at the same time. Usually, you want Apple TV to connect to both bands, but this can sometimes be part of the problem. It’s possible that a specific band and channel can offer better performance.
Launch the AirPort Utility and enter your password. You will see a screen with basic information about your router. Tap on the “Edit” button on the top right.
A screen with configuration options appears. Tap on Advanced and then Wi-Fi Settings.
Next, tap on 5GHz name and enter a name for your 5GHz network and tap Done on the top right.
Continue tapping Done on the top right until you see a message about updating the router settings. Tap Update to update your router. Your AirPort Extreme router will update and restart.
Your router can’t be used until the orange dot next to the router icon turns green. Once it is green, go to Settings > Network on your Apple TV and connect to the 5 GHz network you just created. Run Speedtest to check if it made any difference. You can also connect to the 2.4 GHz network and run Speedtest again. You should use the fastest WiFi network, however, if it worked better before the change, you may want to delete the 5 GHz network. This will restore the dual band WiFi network. Before you switch back, it may prove useful to try fine tuning each band by selecting different channels. (continue…)