Why Wi‑Fi feels slow even when speed tests look fine
In short: Your broadband line can be fine while Wi‑Fi feels slow. Speed tests often run in good conditions (close to the router, little else using the connection). Real use involves distance, walls, other devices, and the way apps and servers behave. Improving router placement, reducing interference, and sometimes adding a mesh or extender can make a big difference.
Line speed vs what you experience
The speed that comes into your home (the “line”) is shared and then distributed by your router. A speed test usually measures the path from your device to a test server. If you test next to the router with nothing else running, you may see a high number. That doesn’t mean every corner of the house or every app will feel that fast.
Why Wi‑Fi can feel slow
- Distance and obstacles: Walls, floors, and distance weaken Wi‑Fi. The further you are from the router, the lower the signal and often the lower the speed you get.
- Interference: Other Wi‑Fi networks, microwaves, and devices can cause congestion and dropouts.
- Congestion at home: Many devices and streams at once share the same connection. One device doing a big download can slow others.
- Latency and jitter: For video calls and gaming, delay and variation matter as much as raw Mbps. Wi‑Fi can introduce extra latency. See latency and jitter in the glossary and our insight on why latency matters.
Practical steps to improve Wi‑Fi
- Place the router in a central, open position, off the floor and away from thick walls and metal.
- Update the router’s firmware if you can.
- Reduce the number of devices on Wi‑Fi at once where possible, or prioritise key devices if your router supports it.
- For large or awkward layouts, consider a mesh system or a compatible extender to improve coverage.
- Test with a device wired to the router (Ethernet) to confirm the line is fine; if wired is fast and Wi‑Fi is not, the issue is in the home network.