Move your router to a better position
Place your router in a central, open location rather than behind a TV, inside a cupboard or on the floor. Wi-Fi signals are weakened by walls, metal, mirrors, appliances and distance.
Keep the router raised on a shelf and away from thick walls where possible. Small changes in position can make a noticeable difference.
Use Ethernet for important devices
For gaming PCs, consoles, smart TVs and work computers, Ethernet is usually faster and more stable than Wi-Fi. It can reduce ping and jitter as well as improve reliability.
If cables are difficult, a mesh system with wired backhaul can help larger homes. Powerline adapters may help, although performance depends on electrical wiring.
Reduce interference
Neighbouring Wi-Fi networks, Bluetooth devices, baby monitors, microwaves and thick building materials can affect wireless performance.
If your router supports both 2.4 GHz and 5 GHz, test both. 2.4 GHz travels further but is often slower. 5 GHz is usually faster at shorter distances.
Restart and update equipment
Restarting your router can clear temporary problems. Check whether your router has firmware updates available.
If your router is old, a modern Wi-Fi 6, Wi-Fi 6E or Wi-Fi 7 router may improve performance, especially in busy homes.
Test in different rooms
Run a speed test close to the router, then test again where you normally use the internet. If the speed drops sharply, the issue is probably Wi-Fi coverage rather than your broadband package.
A mesh Wi-Fi system can help in larger homes, extensions and properties with thick walls.