I often get kicked off this wireless router when doing a simple google search. Usually there are 10 devices connected to the router (TVs, laptops, phones, etc). But when it’s only 5 devices, everything works fine. Is it time for an upgraded router?

10 devices streaming content will always put stress on any router. The router most likely boots you because your device does not hold priority over others. Go into the router settings through the internet portal, and adjust the priority settings of your devices to the highest tier. This will ensure that your devices will always be connected. You can always go buy more commercial oriented routers that can support more than 10, but changing your priority settings will save you some money.