This Tp-Link X20 mesh Wi-Fi device is a must-have if you suffer from dead spots or a lot of buffering Wi-Fi. It literally increased my signal strength and boosted up my mpbs almost threefold and that is no joke. The price here on Amazon is amazing and let's put it this way this device on the box claims it will do a 5-6 bedroom house and it definitely will. I only have a three-bedroom house and this device can definitely work for a house almost twice my size. I have included pictures The first one that shows an HDTV is from the TP link app running speed on average which is definitely good enough for streaming 4K movies and the other is from my cell so you make the call but you would definitely not be disappointed with this. Long story short, my Wi-Fi router was only reaching about 300 ft and I believe that these devices can reach anywhere from 900 to a thousand feet per node and each one of these can work in series so you can expand your Wi-Fi coverage even further. Example some systems can expand your coverage but have to be connected directly to the router either utilizing it ethernet cable or Wi-Fi connected so it can expand your coverage but not this device you use one of the nodes for the new Wi-Fi router and it doesn't matter which one you use, use the included ethernet cable unplug your modem plug in your ethernet cable to either port on the back of the TP-Link node and the other on the back of the LAN port from your modem and then plug your TP link node into the wall receptacle along with your modem/modum router combo and then power them both up at the same time. Once done you have to download the app and there is a QR code and a website that you go to for either iOS or Play store and the app has instructions to follow step by step and once you're up and running you're good to go with that one and your new node connected acts as your new Wi-Fi router with faster and better coverage. All the other existing nodes that you have all you have to do is put it in a location where your signal is weak hopefully somewhere between the Wi-Fi router and that dead zone so you still have a little bit of Wi-Fi and it will shock you because the new TP-Link node actually reaches out a lot further than your Wi-Fi router so depending on what Wi-Fi device you're connected and how close you are you may actually have Wi-Fi coverage covering the area that used to be dead. But hooking up another node would definitely expand it at least through your whole house literally. I can't say enough about these I had one time or a show I think buffered for about 2 seconds and that was it did not buffer again and I believe that was at the very beginning before the show loaded on my TV but most of the time it is really responsive and does not cut out or buffer and reaches so far that it is unreal. The speed that you get with this remember it's also limited onto how much speed you're actually paying for through your internet provider so keep that in mind. It shipped really quickly and I definitely got it on time and Amazon has literally saved me from having to spend hundreds of dollars on a new mesh Wi-Fi router to do my whole home with this new mesh Wi-Fi router combo it makes it so simple to hook up and honestly I have never hooked up a Wi-Fi router and set it up in my life. The internet provider when they installed it they hooked it up and set it up and I've never had to mess with it until now. Something to think about but definitely definitely I cannot say that enough this is worth a try as you would not be disappointed. And as for people who do gaming I don't but my stepson does and when he comes over and brings his PS5 there is no lag the picture is so crystal clear he was actually shocked that this works a lot better than my original Wi-Fi router so something to think about and he's a young adult.