Slow Wi-Fi can quickly become frustrating, especially when everyday tasks such as video calls, streaming, or downloading files take longer than expected. Most users assume the issue lies with their internet service provider or the speed plan they are paying for, but the real problem can be much closer to home.
Routers usually run with default settings designed for broad compatibility rather than optimal performance in a specific environment. As a result, network congestion, outdated firmware, or poorly managed bandwidth can quietly slow down your connection. The good news is that improving Wi-Fi performance does not always require replacing hardware. Here are 4 changes within your router’s settings that can help improve speed, stability and overall responsiveness across connected devices:
Check wireless channel selection to reduce network congestion
Modern routers operate across multiple wireless channels, but many devices remain set to automatic selection. In densely populated areas such as apartment complexes, several nearby networks often compete on the same channels, leading to congestion and inconsistent speeds.
You can find out which channel your network is currently using by logging in to your router’s settings page. You can find nearby crowded and reasonably free channels using certain tools. Reducing interference and increasing connection stability can be achieved by switching to a less crowded channel.
The channel width is also crucial. On Wi-Fi 6E and Wi-Fi 7 networks, wider channels like 80MHz or 160MHz can increase throughput, but they may also decrease coverage range and increase interference. Narrower options, such as 40MHz or 20MHz, may offer lower peak speeds but a more reliable connection between rooms in some homes.
Adjust Quality of Service (QoS) settings to prioritise key devices
Routers include Quality of Service (QoS) settings that determine how bandwidth is distributed across connected devices. Slower devices, like smart bulbs or plugs, can waste airtime and impair the performance of devices that need steady connections, like gaming systems, TVs, and laptops, if they are not properly prioritised.
Instead of treating all traffic equally, QoS features allow users to assign different priority levels to specific devices. This is made possible by certain router settings, such as “Airtime Fairness,” which ensures that devices actively using the network receive enough bandwidth.
Users may consider moving to an aftermarket router that offers more control if the QoS settings on an ISP-provided router are limited or nonexistent. When priorities are set correctly, latency can be decreased, and video calls or streaming can function more smoothly.
Update router firmware to improve performance and security
Upgrading the router’s firmware is sometimes neglected, even though it can directly affect Wi-Fi connectivity. It is common for users to believe that internet service providers handle upgrades, but the truth is that routers often run outdated firmware without bug fixes or security patches.
Older firmware versions can cause instability or make the network more susceptible to attacks. Upgrading the firmware can fix connectivity issues.
Depending on the router model, updates may require downloading the latest firmware file manually and installing it through the router’s settings interface. Once updated, the router benefits from improved stability and reduced security risks.
Switch to a custom DNS server for faster response times
Another thing that could be tested for improvement is the DNS server your network uses. Routers tend to use the ISP’s DNS server by default, which can affect how private your browsing experience feels and how quickly pages load.
Using a different DNS server can speed up lookups by leveraging larger and faster caches. It also gives the ISP less opportunity to track your activities or sell your data for advertising.
Setting up a local DNS server with platforms such as OPNsense requires some initial configuration, but it gives users greater control over network behaviour and improves responsiveness over time.
Slow Wi-Fi does not always require new hardware. Adjusting channel selection, enabling QoS features, keeping firmware up to date, and switching DNS settings can address many common performance issues. While ISP routers may offer limited controls, even small configuration changes can help deliver a smoother and more stable wireless experience across devices.
