Views on the Chromecast varies, so I'll give you this advice; buy a Chromecast from a place like Best Buy that can take returns on open products. See how it preforms for you, if you find it good in terms of speed and quality, keep it. If not, return it. In my old house the Chromecast preformed like s***, in my new place it preforms really well. There are many things that can cause Wi-Fi interference, so the best way to answer this is trial and error