Slow WiFi? We'll Find the Cause and Fix It — For Home and Business
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fix slow wifi
low WiFi isn’t just annoying — it’s expensive. A dropped call, a card payment that won’t go through, a video meeting that freezes: each one costs time, and sometimes a sale. Whether it’s one laptop struggling upstairs at home or a whole office where the WiFi grinds to a halt every afternoon, CADS IT gets to the root of the problem instead of just telling you to restart the router.
We’ve been fixing networks for homes and businesses across Derbyshire and Staffordshire for over 20 years, and slow or unreliable WiFi is one of the most common calls we get. Here’s how we approach it — and how to get it sorted.
The Signs Your WiFi Has a Real Problem
Not all “slow WiFi” is actually a speed problem. Before we visit or connect remotely, these are the symptoms worth telling us about, as they point to different causes:
- Speed is fine in one room but drops to nothing in another (coverage problem)
- WiFi disconnects and reconnects on its own, especially at busy times (interference or overloaded router)
- Everything slows down when more people join a call or more devices connect (capacity problem)
- Speed test results look fine, but the connection still feels sluggish in everyday use (configuration or hardware issue)
- It’s always been slow in the same spots since the day it was installed (poor original setup or building layout)
What's Usually Causing It
In the Home
- An outdated router supplied by your broadband provider, often underpowered for a modern household
- Walls, floors, and appliances blocking the signal between rooms
- Neighbouring WiFi networks fighting for the same channel, especially in flats and terraces
- Too many devices — smart TVs, doorbells, consoles, phones — competing for one router
- The router tucked away in a cupboard or behind the TV, far from where you actually need signal
In the Office, Shop, or Warehouse
- Domestic-grade routers trying to cover commercial floor space they were never designed for
- Metal shelving, stock, or machinery blocking signal on the shop floor
- Card machines, POS terminals, and stock-taking devices competing with staff and guest WiFi on the same network
- No separation between guest WiFi and the network your tills or servers rely on — a security risk as well as a performance one
- Growth: more staff, more devices, more locations added to a network that was only ever sized for the original headcount
How we fix it?
We don’t guess — we diagnose. Depending on what you need, that can include:
- A WiFi site survey — we map signal strength and interference across your home or premises to find exactly where coverage fails
- Right-sized equipment — swapping underpowered routers for business-grade access points or a mesh system sized correctly for your space
- Network cabling — where WiFi alone can’t reliably cover a building, we run proper cabling to get a wired connection to the access points that need it
- Network segmentation — separating guest WiFi from the network your tills, servers, and card payments run on, for both speed and security
- Ongoing monitoring and support — so if something does go wrong, we often catch it before you do
Network Solutions
Our Services
If you need a better internet connection, wireless links, or a faster more reliable and more secure network, then CADS can help you.
Troubleshooting
Troubleshooting to find the cause of slow speeds on your wired or wireless network.
Installations
Cat 6 Networking, Data, Voice Cabling, and installations.
Wireless Access Points and Boosters
Improve the range and strength of your network.
Support
Network repairs & Server Support for businesses.