My WiFi was driving me insane. Video calls freezing. Streaming buffering in the evenings. Speed tests showing a fraction of what I was paying for. I was ready to switch providers until a friend who works in IT came over, looked at my setup, and fixed it in twenty minutes.

Turns out the problem wasn’t my internet connection. It was everything between my router and my devices. Most slow WiFi problems are exactly like this—fixable without spending money or changing providers.

Check Your Router Placement First

This is the single biggest factor most people get wrong. Your router is probably sitting in the worst possible location.

Common bad spots: Inside a cupboard, behind the TV, in a corner room, on the floor, next to a microwave or Bluetooth speaker.

Why it matters: WiFi signals radiate outward from the router in all directions. When you put it in a corner, half the signal goes outside your house. When you put it in a cupboard, the signal has to pass through wood and potentially metal shelving. When you put it on the floor, the signal gets absorbed by flooring materials before reaching your devices.

The fix: Place your router in the most central location possible, elevated (on a shelf or mounted on a wall), away from other electronics, and out in the open. Not hidden for aesthetics—visible and unobstructed.

When my friend moved my router from behind the TV in the living room to the top of a bookshelf in the hallway, my speeds doubled immediately. Same router, same plan, different location.

Channel Congestion

If you live in an apartment building, this is probably your biggest problem. WiFi routers broadcast on specific channels within the 2.4GHz and 5GHz frequency bands. When multiple nearby routers use the same channel, they interfere with each other.

Download a WiFi analyzer app on your phone and check which channels are crowded in your area. Then log into your router settings and manually select a less congested channel.

For 2.4GHz, channels 1, 6, and 11 are the only non-overlapping options. Pick whichever has the least competing networks. For 5GHz, there are more channels available and congestion is typically less severe.

This alone can transform WiFi performance in dense housing. I’ve seen apartment dwellers go from unusable to perfectly functional just by changing channels.

The 2.4GHz vs 5GHz Decision

Most modern routers broadcast both 2.4GHz and 5GHz networks, sometimes with the same name. Understanding the difference helps:

2.4GHz: Longer range, better at penetrating walls, but slower maximum speeds and more prone to congestion and interference from other devices (microwaves, Bluetooth, baby monitors).

5GHz: Faster speeds, less interference, but shorter range and poor wall penetration.

If your router combines both bands under one network name, your devices automatically choose which to connect to. This usually works fine but sometimes picks wrong. If you’re getting slow speeds while sitting next to your router, your device might be stuck on 2.4GHz when 5GHz would be faster.

The fix: Separate your 2.4GHz and 5GHz into different network names. Connect devices that need speed and are close to the router (laptop, streaming box) to 5GHz. Connect devices that are far away or just need basic connectivity (smart home devices, security cameras) to 2.4GHz.

Bandwidth Hogs

Your internet connection has a fixed total bandwidth shared among all connected devices. If one device is consuming most of it, everything else slows down.

Common culprits: someone streaming 4K video, large cloud backups running in the background, game updates downloading, smart cameras uploading footage continuously, Windows or macOS updates.

The fix: Most modern routers have QoS (Quality of Service) settings that let you prioritize certain devices or types of traffic. Prioritize video calls and work devices. Let downloads and backups happen at lower priority.

Also check how many devices are connected to your network. An average Australian household in 2026 has 20-30 connected devices. Each one uses some bandwidth even when idle. Smart speakers, thermostats, light bulbs, appliances—they all connect and consume.

When You Actually Need New Hardware

Sometimes the fix really is new equipment. Signs you’ve outgrown your router:

It’s more than five years old. WiFi standards have improved significantly. A router from 2020 doesn’t support WiFi 6 or 6E, which offer meaningfully better performance with modern devices.

Your house is too big. No single router covers a large house well. Mesh WiFi systems—multiple access points working together—are the solution for anything over about 150 square metres.

Your ISP-provided router is garbage. Most ISP-supplied routers are the cheapest hardware that technically works. Replacing it with a decent aftermarket router often improves performance substantially.

Before buying anything, check that your actual internet plan delivers the speeds you need. Run a speed test with your device connected directly to the modem via ethernet cable. If that speed is fine but WiFi is slow, it’s a WiFi problem. If the wired speed is also slow, it’s an ISP or plan problem.

An AI consultancy I follow recently published a case study about a company that spent thousands on network upgrades before discovering their ISP was throttling their connection during business hours. Basic diagnostics first, expensive solutions second.

Quick Wins Summary

Before spending money or calling your ISP:

1. Move your router to a central, elevated, unobstructed location
2. Check for channel congestion and switch to a less crowded channel
3. Separate 2.4GHz and 5GHz networks and connect devices appropriately
4. Identify bandwidth hogs and configure QoS priorities
5. Restart your router (seriously, it helps more often than it should)
6. Update your router firmware—manufacturers release performance improvements regularly

These five steps fix the majority of home WiFi problems. They cost nothing and take less than an hour.

If none of that works, then consider mesh WiFi systems, router upgrades, or talking to your ISP about your plan. But start with the free fixes. They’re usually enough.