Why Is My Internet So Slow? 12 Fixes That Actually Work

Few things are as frustrating as a video call freezing mid-sentence or a film buffering right at the best part. The good news is that most slow-internet problems have a clear cause — and many can be fixed in minutes without paying for a new plan.

Start by measuring. Run our free internet speed test once on Wi-Fi and, if possible, once with a laptop plugged into the router by Ethernet cable. Comparing the two tells you whether the problem is inside your home or on the line coming in.

Step 1: Find out where the problem is

• Wired speed is close to your plan, Wi-Fi is slow — the problem is Wi-Fi coverage, interference or your devices. Fixes 1–8 will help most.
• Wired speed is also slow — the problem is more likely your line, router or provider. Jump to fixes 9–12.
• Speed is fine but everything feels laggy — look at ping, jitter and latency under load. Fix 7 (bufferbloat) is for you.

12 fixes for slow internet

1. Restart your router and modem

Turn them off, wait 30 seconds and turn them back on. A restart clears memory, drops stuck connections and often fixes sudden slowdowns.

2. Move your router to a better spot

Wi-Fi weakens with distance and through walls, floors, mirrors and fish tanks. Place the router in a central, raised, open position — not inside a cupboard or behind the TV.

3. Use the 5 GHz (or 6 GHz) band

Modern routers broadcast on several bands. 2.4 GHz reaches further but is slower and crowded; 5 GHz and the newer 6 GHz band are much faster at shorter range. Connect nearby devices to the faster band.

4. Change the Wi-Fi channel

In flats and busy streets, dozens of networks compete for the same channels. Most routers can choose automatically — switch the setting on, or pick a less crowded channel manually.

5. Find out what is using your bandwidth

Cloud backups, game downloads, system updates and 4K streams on other devices all share your connection. Pause heavy downloads, schedule backups for the night and check your router’s device list for anything unexpected.

6. Update or replace old equipment

An older router or laptop Wi-Fi card can cap your speed well below your plan. If your router is more than five years old, a Wi-Fi 6 model — or a mesh system for larger homes — can make a dramatic difference.

7. Fix bufferbloat for smoother calls and gaming

If your ping shoots up whenever someone downloads, you have bufferbloat. Enable SQM or QoS in your router settings if available, or choose a router that supports smart queue management. Our speed test shows this as “latency under load”.

8. Scan for malware and remove extensions

Malware and unwanted browser extensions can use bandwidth in the background. Run a security scan and remove extensions you do not recognise.

9. Check your cables and connections

A damaged or loose cable, an old splitter or a poor-quality extension lead for broadband can all reduce speed. Plug the router directly into the main socket and use a good Ethernet cable (Cat 5e or better).

10. Test your VPN

VPNs add encryption and an extra hop. Test with the VPN off; if speed jumps, connect to a closer VPN server or use split tunnelling for streaming and gaming.

11. Change your DNS server

DNS doesn’t change download speed, but a slow DNS server can make websites take longer to start loading. Public DNS services such as Cloudflare (1.1.1.1) or Google (8.8.8.8) are often quicker than the default.

12. Talk to your provider — with evidence

If wired speeds are consistently well below what you pay for, contact your provider with your speed test history: dates, times, wired results and ping. Ask them to check the line and your router’s settings, or whether a better plan or technology such as fibre is available at your address.

When to upgrade your plan

If your connection works as it should but still can’t keep up, it may simply be too slow for your household. As a rough guide, allow about 25 Mbps for every person who streams in 4K at the same time and at least 20 Mbps upload if you work from home. Our guide to what a good internet speed is explains how to calculate what you need.

Frequently asked questions

Why is my internet slow at night?

Evenings are peak time, when many people in your area stream and game at once. Busy local networks can reduce speeds. If the drop is large and happens every evening, share your speed test history with your provider.

Does restarting the router really help?

Often, yes. A restart clears the router’s memory, ends stuck connections and can pick a less crowded Wi-Fi channel. It is quick, safe and a sensible first step.

Can a VPN slow down my internet?

Yes. A VPN routes your traffic through another server and encrypts it, which adds latency and can reduce speed, especially if the VPN server is far away or busy. Try a closer server or test with the VPN switched off.

How do I know if the problem is my Wi-Fi or my provider?

Test with a laptop connected to the router by Ethernet cable. If the wired speed is close to your plan, the issue is Wi-Fi coverage or devices. If the wired speed is also slow, the problem is likely your line or provider.

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