The point about a fast internet package not guaranteeing a smooth experience is worth stressing, since many people assume the ISP is at fault when the router is the real bottleneck. Frequency bands matter a lot in practice: the 2.4 GHz band travels farther and penetrates walls better, while 5 GHz offers more speed at shorter range. In apartments or dense offices, channel congestion is another common culprit. Checking which channels neighbors are using and picking a less crowded one often helps more than buying new hardware. Security protocols are worth reviewing too, since older ones weaken the network.