The challenge of latency in gaming: when broadband is not enough

Once, I believed that a 500Mbps fiber connection was sufficient to ensure uninterrupted online gaming sessions. After all, games like Valorant only use a fraction of that bandwidth. However, every time my brother started downloading games on my PS5 or Steam launched updates on my PC, I suddenly noticed packet loss and spikes in network latency. Even if my ping only worsened slightly, those sudden fluctuations in latency were enough to teleport enemies or register my shots late at the worst moments.

The discovery of QoS: intelligent traffic management

Initially, I considered the idea of upgrading my router, a 2017 DIR-882, thinking it was too old to handle modern traffic. However, I realized that the problem was not related to the available bandwidth, but to the lack of configuration of the QoS (Quality of Service) settings of my router. This led me to explore how QoS and SQM (Smart Queue Management) work and how they can improve the gaming experience.

QoS: a simple but limited solution

Configuring QoS on my router turned out to be the immediate solution to the latency problem caused by other devices. By accessing the router's administration page, I was able to set priorities for connected devices. I assigned the highest priority to my PC, a medium priority to the PS5 and other devices, and set the download and upload speed to 90% of the available bandwidth. This gave the router the necessary space to manage traffic before the Internet connection became completely saturated.

However, this solution has a significant limitation: my router is unable to distinguish between different applications on the same device. For example, it cannot prioritize Valorant over Steam or Chrome. Fortunately, many modern routers support adaptive QoS, which can identify and prioritize latency-sensitive traffic. Unfortunately, my old router does not support this functionality, forcing me to look for alternative solutions.

SQM: the advanced solution for obsolete routers

To solve the problem of latency caused by downloads on my PC, I had to install OpenWrt on my router and manually configure SQM. OpenWrt is an open-source firmware that allows you to unlock advanced features on old or obsolete routers. After installing OpenWrt and the necessary packages, I enabled SQM and set the download and upload limits to 90% of my bandwidth.

Unlike standard QoS, SQM manages network traffic by dividing it into individual flows and scheduling them fairly. This prevents file downloads from saturating the queue and forcing latency-sensitive packets to wait. The result is more stable latency and reduced jitter on the network during gaming, even while downloading files on the PC.

Compromises and considerations

Enabling SQM is not without compromises, especially on old routers with weak CPUs. My DIR-882, for example, uses a dual-core MediaTek processor, which quickly becomes a bottleneck when SQM is enabled. This significantly reduces the available bandwidth, forcing me to choose between optimal gaming performance and high download speeds. However, for a gamer, latency stability is often more important than download speed.

For most users, standard QoS might be sufficient to prevent latency spikes during gaming. Only those who own a very old router, like mine, might need to consider more advanced solutions such as installing OpenWrt and configuring SQM. In any case, the main problem is not the speed of the Internet connection, but how the router manages traffic when the connection is under pressure.

Upgrade options: the TP-Link Archer GX90

For those looking for a more modern router with advanced QoS features, the TP-Link Archer GX90 might be an interesting option. This router supports Game Accelerator QoS, which prioritizes gaming streams to maintain stable latency. Although it might be excessive for most users, some gamers might appreciate the additional traffic controls offered by this device.

Intelligent network traffic management, through QoS or SQM, can make the difference between a smooth gaming session and one full of frustrations. Although the best solution depends on the technical specifications of your router and individual needs, it is clear that the correct configuration of these features can significantly improve the online gaming experience.

The future of traffic management: modern routers and beyond

While solutions like QoS and SQM offer significant improvements for older routers, the technological landscape is evolving rapidly. Modern routers like the TP-Link Archer GX90 represent just the beginning of a new era of network traffic management, with advanced features designed specifically for gamers.

Wi-Fi 6 and beyond: the revolution of bands

The TP-Link Archer GX90 is not just an advanced router for QoS, but also incorporates the Wi-Fi 6 (AX6600) standard, which offers several advantages over previous generations. This standard allows for more efficient traffic management, further reducing bufferbloat and improving connection stability in high congestion scenarios.

The Wi-Fi 6 technology introduces the concept of OFDMA (Orthogonal Frequency-Division Multiple Access), which allows the router to divide channels into smaller sub-channels, assigning them to multiple devices simultaneously. This means that even with numerous active devices, gaming traffic can be isolated and prioritized more granularly than with traditional QoS.

Artificial intelligence and machine learning

Some latest-generation routers are integrating artificial intelligence algorithms to optimize traffic management in real time. These systems can learn from users' usage habits and dynamically adapt traffic priorities. For example, a router with AI could automatically recognize when a user is playing a competitive game and increase the priority of gaming traffic without requiring manual intervention.

This evolution represents a significant step forward compared to static solutions like SQM, which require manual configurations and cannot adapt to sudden changes in network conditions. With AI, the router becomes a proactive system that anticipates users' needs and continuously optimizes performance.

Security and traffic management

Another crucial aspect is the integration of security into traffic management. Modern routers can identify and automatically block suspicious or malicious traffic, preventing potential attacks that could degrade network performance. This feature is particularly useful for gamers who are often targeted by DDoS attacks or other attempts to interfere with their connection.

The role of mesh networks

For those looking for an even more advanced solution, mesh networks are becoming a popular choice. These systems use multiple nodes to create an extended and consistent Wi-Fi coverage throughout the home. Some mesh systems, such as those offered by Netgear or Google, integrate advanced QoS features that can be managed through a unified interface.

Mesh networks offer the advantage of centralized traffic management, allowing users to configure traffic priorities once and apply them to all connected devices. This is particularly useful in home environments with many different devices, where managing each router individually could become complex.

Final considerations

While solutions like QoS and SQM remain valid for improving gaming performance on older routers, the adoption of more modern technologies offers significant advantages. Wi-Fi 6, AI, advanced security, and mesh networks represent the future of network traffic management, offering a combination of performance, stability, and convenience that traditional solutions cannot match.

For serious gamers, investing in a modern router with these features can make the difference between a frustrating gaming session and a smooth, uninterrupted experience. However, it is important to consider your specific needs and available budget before making a purchase, as not all technological improvements are necessary for every user.

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