Connectivity · Oct 2026 · 2 min read

Why your home Wi-Fi is slow, and what actually helps

Slow Wi-Fi has a handful of common causes. Measure first, then fix the one that applies.

First, separate the Wi-Fi from the internet connection. If you can, connect a computer to the router with a cable and run a speed test, then run the same test over Wi-Fi in the same spot. If the cable result is also slow, the problem is your plan or your provider, not the Wi-Fi.

Placement matters more than most people expect. A router works best in a central, open position, raised off the floor and away from thick walls, mirrors, aquariums and microwave ovens. A router hidden in a cupboard at one end of the house will struggle to reach the other end.

Most routers offer two bands. The 2.4 GHz band reaches further and passes through walls better but is slower and more crowded. The 5 GHz band is faster at short range. If your devices can see both, use 5 GHz near the router and 2.4 GHz further away.

One device can slow down everyone. A large download, a cloud backup or a game update can use most of the connection. If the slowdown comes and goes, check what was running at the time.

In apartment buildings, many routers compete for the same channels. Most routers can choose a less crowded channel automatically after a restart, and many let you pick one in their settings.

If the house is large or has several floors, one router may simply not be enough. A mesh system with two or three units usually gives more even coverage than a single, more powerful router.