Hi Bob - My review was based on the install of a Skybell also. Honestly 90ft is really not far. With a N900 you should be solid up to about 350-450ft. That's also taking into consideration obstructions and signal interference. Your situation sounds like more of an interference problem. Purchasing this extender won't necessarily solve your problem and could make it worse if you use the default channel settings. It will however, do it's job and extend or boost the signal to the Skybell, but underlying problem will still exist in your home that will continue to impact the WiFi performance of any device connected to your WiFi. I recommend that you do a network site survey. There are a number of apps you can download on your phone to check the networks broadcasting in the area. It's possible there is another one (or several) broadcasting on the same channel as your router. Change the channel on your router and test it out. Hope that helps. Good luck.