If your broadband connection promises excellent speed, you may need a high-performance router to see the actual speeds your ISP advertises. Even with a Gigabit Ethernet connection, your Wi-Fi speeds may be slow if you have a smart home system or many connected devices and your router lacks the bandwidth necessary to support the network traffic. A dual-band Wi-Fi 6 router, on the other hand, will offer more simultaneous "streams" to optimize connections.