Slow Wi-Fi around the house: 5 solutions that work

A video call that freezes, a Netflix series that pixelates, an online game that lags: when the Wi-Fi is sluggish, your whole digital day-to-day seizes up. Before switching router or internet provider, here are 5 solutions to try at home — often free, sometimes in 5 minutes.

First, measure the problem

Before looking for solutions, you need to know what's wrong. Three simple measurements:

• Speed test: on a computer or phone connected to the Wi-Fi, go to fast.com or speedtest.net. Note the result in several rooms of the house.
• Wi-Fi vs wired comparison: plug an Ethernet cable directly between your router and the computer, then run the test again. If it jumps up, the problem is your Wi-Fi. If it's the same, the problem is your internet subscription.
• Coverage map: with an app like WiFi Analyzer (Android) or NetSpot (Mac/Windows), you can visualise the signal room by room.

1. Reposition your router

The location of your router is the number one cause of Wi-Fi problems. Many people leave it by default in the hallway cupboard, behind the door, next to the washing machine. All the worst options.

Simple rules:

• Up high (not on the floor, not inside a closed cabinet)
• In the centre of the home (not in a corner), if possible
• Away from microwaves, DECT phones, baby monitors which interfere with Wi-Fi on the 2.4 GHz band
• Away from aquariums and large mirrors (water and metal absorb the signal)
• Out in the open, not behind a TV or inside a closed cupboard

In the villas and large houses I see in Mougins or Le Cannet, simply moving the router from the basement to the central floor can double the coverage.

2. Change the Wi-Fi channel

Wi-Fi runs on "channels" (1 to 13 on the 2.4 GHz band, 36 to 165 on the 5 GHz band). If all your neighbours are on channel 1 and so are you, it creates interference. This is especially true in blocks of flats or dense residential areas.

On the 2.4 GHz band: only channels 1, 6 and 11 don't overlap. If you're on 3, 5 or 8, you interfere with two neighbours at once. Switch to 1, 6 or 11.

How to change it: log in to your router's interface (often 192.168.1.1 in the browser, credentials on the back of the router). Look for "Wi-Fi" → "Channel" → choose "Auto" or a free channel. On Windows, the free tool WiFi Analyzer (Microsoft Store) shows all the nearby Wi-Fi networks with their channel — you immediately see what's free.

3. Favour 5 GHz where possible

All recent routers broadcast on two bands: 2.4 GHz (long range but congested and slow) and 5 GHz (faster, cleaner, but shorter range).

For devices close to the router (living-room TV, games console, desktop computer), connect them to 5 GHz. You'll gain in speed and stability.

How: on the router, the 5 GHz network often has a different name (e.g. "Livebox-XXXX-5GHz"). Connect explicitly to that one on compatible devices. For those far from the router (the back bedroom), stay on 2.4 GHz, which reaches further.

4. Install a Mesh system for large properties

If your home is over 100 m², has several floors, or thick load-bearing walls (typical of the Côte d'Azur with its old stone), a single router isn't enough, whatever its quality. You need a Mesh system: several Wi-Fi units that form a single, seamless network.

The principle: 2, 3 or 4 units placed around the house, which talk to each other and create a single Wi-Fi network. Your device automatically switches to the nearest unit without any drop.

Leading brands:

• TP-Link Deco (X20, X50) — good value for money, ~€150-300 for 3 units, ultra-simple setup via smartphone app
• Google Nest WiFi Pro — polished design, Google Home integration, ~€350 for 3 units
• Eero (Amazon) — reliable, simple, ~€250 for 3 units
• Ubiquiti UniFi — for tech enthusiasts, complex setup, pro-level performance, from €200 per unit

A Mesh installation is the number one solution for Mougins or Cannes villas where the Wi-Fi doesn't reach everywhere. Budget €250-400 for the complete kit installed at your home, with the configuration optimised for your house.

5. Check it really is the Wi-Fi (and not the internet)

Before investing, make sure the problem really comes from the Wi-Fi and not from your internet line. Three cases where the culprit is elsewhere:

• The issue is also present over a wired (Ethernet) connection: your Wi-Fi is fine, it's your internet subscription that's slow. Contact your ISP.
• It only lags at certain times (7-10 pm): network congestion from your ISP or your neighbourhood. Not much you can do on the Wi-Fi side.
• It only lags on certain sites/services: Netflix lagging but everything else fine = it's a problem on Netflix's side or ISP peering, not your Wi-Fi.

Going further

In summary, the order to follow:

1. Measure Wi-Fi vs wired speed to identify the real problem
2. Reposition the router (free, immediate)
3. Change the Wi-Fi channel (free, 5 min)
4. Favour 5 GHz for nearby devices
5. For a large house: move to Mesh

In 90% of cases, steps 1-4 are enough to fix the problem for €0. The remaining 10% (large villas, very thick walls) need a Mesh.