Fibre stops at your router. Everything after that depends on your own setup, and that is almost always where the speed disappears.
Your provider sells you a speed measured at the point where it enters the building. Between that socket and your screen it crosses the router, the air, some walls, a Wi-Fi adapter and sometimes a repeater. Each of those stages takes its share.
Run a speed test on a computer connected to the router with a network cable, then the same test over Wi-Fi, in the same place.
Run the test at several times of day : in a block of flats, speeds drop noticeably in the evening when the whole neighbourhood is online.
For a desktop, a television or a console that never moves, a network cable is still unbeatable : maximum speed, minimum latency, no interference. A discreet cable along a skirting board often solves in ten minutes what a hundred-euro repeater will never quite fix.
If one device is slow while the others are fine, it is not the network. Look at downloads or updates running in the background, cloud syncing, a browser loaded with extensions, or an active VPN routing all your traffic through a distant server. Task Manager, under Performance, shows in real time what is using the bandwidth.
A machine that is generally slow will also feel like slow internet, with the network playing no part at all - see slow computer.
A video that pauses, a site slow to respond or a stuttering game do not necessarily mean your speed is too low. Latency, a distant server under load, or the quality of your network adapter often matter more. Beyond 100 Mbit/s in real terms, adding more speed changes nothing in everyday use.
We measure the speed room by room, identify the weak spots and propose what suits the building : band settings, cable, powerline or a multi-point system. We work across Lyon and the Rhone.
Close to the router, on the 5 GHz band and with a recent device, several hundred megabits is normal. Through two walls, dropping to a few dozen is just as normal.
If your router is more than five years old, yes : recent models handle multiple devices and current Wi-Fi standards better. Providers often offer an exchange.
Rarely. If the speed over cable is already good, upgrading the subscription changes nothing : it is the wireless side that needs work.
Room-by-room speed measurement and a solution matched to your home.
Automatic assistant: it can make mistakes. Never share a password or a card number.
