- Latency is the round-trip time of data, and a low value is key for gaming, video calls, and remote work.
- The main causes of high ping on WiFi are poor coverage, interference, device saturation, and outdated equipment.
- Tools such as ping, WinMTR or mobile apps allow you to locate where latency appears on the network.
- Reducing lag requires combining Ethernet cable, good WiFi configuration, QoS, an updated router, and avoiding traffic and services that add delay.
If you notice that online games are lagging, video calls are dropping , or websites are taking too long to load even though your internet speed seems good, the problem is almost certainly not speed, but latency. The good news is that by understanding what causes it and how to reduce it with a comprehensive network latency solution , you can significantly reduce it, even on home and business Wi-Fi networks.
Throughout this guide you will see in great detail what latency or ping is, why it increases on wireless networks , what impact it has on games, video calls, teleworking and IoT, how to measure it with free tools and what specific adjustments to apply to your router, your equipment and your network to keep lag to a minimum.
What is latency (ping) and why should it be as low as possible?
Network latency is the time it takes for a data packet to travel from your device (mobile, PC, console, etc.) to a server on the internet or a computer on your local network, and return with a response. It is measured in milliseconds (ms), and the closer it is to 1 ms, the better the perceived immediacy.
When that latency spikes, you notice it in the fact that data takes a long time to send or receive : a WhatsApp message that is sent late, a website that "thinks" before starting to load, an online game with slow actions, or IP cameras that respond late to your commands.
In modern fiber optic networks and good WiFi, a latency of less than 20 ms is considered excellent ; between 20 and 50 ms is still very good; between 50 and 100 ms some delay begins to be noticeable; and above 100 ms the problems are already quite evident in real-time tasks.
It is important to differentiate three concepts that are often mixed up: latency is the delay in ms, ping is the way to measure it (command or test) and lag is the visible effect when the latency is so high or so variable that the experience becomes bad, with cuts, jerks or clear delays.
Why is ping so important in everyday life?
Most people only look at download and upload speeds , but for many tasks, latency is what matters most. Even with 1 Gbps, you can have a terrible experience if the ping is high or unstable.
In online games, low latency is vital for your actions to reach the server almost instantly . In shooters, racing games, or soccer, a delay of 0,1 seconds (100 ms) can make the difference between winning and losing, and above 150 ms the game becomes frustrating.
In video calls (Zoom, Teams, Skype, WhatsApp, etc.), latency determines whether you can speak simultaneously without interrupting each other or if the sound and image are delayed. Below 40 ms, the call feels natural; between 40 and 100 ms is usually acceptable; above 100 ms, awkward silences and overlapping voices begin.
Remote work and access also depend on a good ping. Working on a remote desktop with 20 ms is comfortable; with 200 ms it becomes frustrating, with a slow mouse, delayed typing, and menus that take forever to open.
Is high latency a security or hardware problem?
From a strictly technical standpoint, high latency is not a direct cybersecurity risk . It doesn't inherently make your network more vulnerable, nor does it damage the electronics of your router, PC, or mobile device.
However, excessive delay can cause indirect effects : failed processes, interrupted transfers, or unstable remote sessions leading to human error, misconfiguration, or data loss, which can open the door to security problems or file corruption.
Furthermore, if monitoring and defense systems (IPS, IDS, advanced firewalls, SIEM, etc.) receive information with a significant delay, they could detect suspicious activities or ongoing attacks late, reducing the effectiveness of the security management system (ISMS) and complicating compliance with standards such as ISO 27001.
In any case, a high ping on your network doesn't mean your hardware is going to break or that you're "unprotected" for that reason. What's really important is maintaining good cybersecurity practices : keeping updates up to date, using antivirus software, having a properly configured firewall, and having clear network usage policies.
Main causes of high latency in wireless networks
The reasons your ping spikes can range from internal Wi-Fi problems to limitations from your internet provider or remote servers. Understanding them is the first step to fixing them.
Poor WiFi coverage, saturation and interference
At home and in offices, Wi-Fi is the norm, and coverage is key. If the signal is weak or clogged with interference, you'll experience slow speeds, dropouts, and high ping . The further you are from the router or the more walls there are in between, the worse it will be.
Neighbors also play a role: if your router broadcasts on the same channel as several nearby networks, it creates congestion. This is very common in the 2,4 GHz band because it has a longer range and fewer truly non-overlapping channels, resulting in more packet collisions and waiting times.
Added to this is the number of connected devices. The more Wi-Fi clients there are, the more airtime they consume. "Slow" devices or those with weak signal worsen the situation because they take longer to send and receive data, also affecting faster devices.
Old or poorly configured network equipment
Furthermore, if you've altered advanced settings without fully understanding them, you may have created unnecessary queues, overly complex firewall rules, or filtering systems that introduce latency. In these cases, it's sometimes advisable to reset to factory settings and carefully re-configure the basic settings.
Other devices overloading the network
If your network has computers downloading via P2P, consoles updating heavy games, televisions playing 4K video, or cloud backups running, it's logical that latency and jitter (ping variation) will skyrocket, especially with modest connections.
You can alleviate this by limiting the bandwidth of certain devices or enabling QoS (Quality of Service) on your router to prioritize traffic from games, video calls, or specific devices that need it (work PC, main console, etc.). This way, even if downloads are running in the background, time-sensitive traffic will be prioritized, and you can use analytics tools to identify the biggest bandwidth consumers.
Interference and band and channel selection
The 2,4 GHz band has greater range and penetrates walls better, but it is very congested and shares frequencies with many other devices (microwaves, Bluetooth, etc.). This results in a higher probability of interference, collisions, and packet retransmission , which increase latency.
The 5 GHz band offers significantly faster speeds and less interference, at the cost of reduced range. Whenever possible, for gaming, video calls, or working remotely, it's preferable to use 5 GHz instead of 2,4 GHz . And in modern routers, upgrading to WiFi 6 or WiFi 6E (with the 6 GHz band) further reduces congestion.
In addition, choosing the right channel helps a lot. You can analyze the environment with Wi-Fi analysis apps and switch to a less congested channel. Sometimes, simply changing the channel on the 2,4 GHz or 5 GHz band will reduce latency by a few milliseconds and ensure a stable improvement.
Background programs and automatic updates
On your PC, console, or mobile device, there may be processes consuming bandwidth without you realizing it : system updates, cloud synchronization, automatic game downloads, P2P clients running in the background, etc.
If your internet connection isn't very fast, these processes can increase latency while you're browsing or playing games. It's best to close any applications you don't need and schedule automatic updates for off-peak hours.
Malware on computers and mobile phones
A computer infected with malware can significantly increase latency in two ways: by massively consuming CPU or memory and by constantly using the connection to send or receive data (spam, cryptomining, botnets, etc.). The typical symptom is very slow browsing, even on simple pages, and highly fluctuating ping.
It's essential to regularly scan all devices with antivirus and antimalware tools . Don't limit yourself to your PC: tablets, mobile phones, Smart TVs, and other devices can also be affected and slow down the entire network.
Using VPN or proxy
VPNs and proxies are very useful for protecting privacy, encrypting data, or bypassing geographical restrictions , but they often increase latency because they add an extra hop: your data goes first to the VPN or proxy server, and from there to the destination.
If you absolutely need a VPN, prioritize quality paid services and geographically close servers. Free VPNs are often overloaded and can significantly increase ping. And if your goal is to play games or make video calls with minimal lag, it's best to avoid using a VPN or proxy while doing those tasks.
Firewall settings
Firewalls inspect incoming and outgoing traffic to protect the system, but if your configuration is very aggressive or you add features such as deep packet inspection (DPI), advanced web filtering, or very complex rules , each packet takes longer to process.
It's not about disabling the firewall, but about configuring it wisely : disabling features you don't need, reviewing outdated rule lists, and avoiding duplicates. Many routers also allow you to disable advanced features only during critical gaming sessions or video calls.
Connection type, provider and infrastructure
Beyond your Wi-Fi, the type of internet access you use makes a big difference. A well-designed fiber optic connection usually offers the lowest and most stable latency. Coaxial cable connections are reasonable, but suffer more during peak hours. ADSL and, especially, satellite have much higher pings due to physical limitations.
The quality of the ISP's network also matters: a provider with good routing and peering is not the same as one with saturated infrastructure. And the geographical distance to the target server is key: the farther away it is (for example, a game server on another continent), the longer the packets will need to make the round trip.
How to measure the latency of your local network and Internet
Before changing anything, it's important to accurately determine where the problem is occurring: whether the latency is high within your own local network , if it only appears when connecting to the internet, if it affects certain routes, or if it's intermittent. Several tools are available for this purpose.
Ping command
The ping command comes pre-installed on virtually all operating systems. It sends ICMP packets to an address and calculates how long they take to return. On Windows, simply open the command prompt (cmd) and type, for example:
ping 8.8.8.8
This shows you the latency to Google's public DNS servers. If you want to run continuous tests, you can use parameters like -t or limit the number of packets with -n . To check only your local network, ping the gateway (usually the router's IP address).
Tools for routing and diagnosing jumps
Programs like WinMTR combine ping and traceroute to show all the hops your traffic goes through from source to destination, with percentage of loss and minimum, average and maximum latencies at each node.
This allows you to determine if the problem lies with your router, the first hop of the ISP, an intermediate node, or the final server. You can leave it running for hours to monitor latency spikes and intermittent outages , and export the results in HTML.
Other graphical tools like NetScan Tools Basic Edition or PingPlotter offer more visual interfaces for viewing graphs of ping, traceroute, and other network parameters. They are very useful if you want a more professional analysis.
Measure TCP connection latency
Beyond the classic ICMP ping, you can measure latency on actual TCP connections with utilities like NetworkLatencyView (Windows). This tool listens to the TCP connections made by your system and calculates the average latency for each destination IP address, displaying up to 10 values per host.
You need a packet capture tool like WinPcap or similar, but once set up it gives you a pretty accurate picture of how latency behaves in web browsing, apps, and real-world services you use on a daily basis.
View real-time ping from the taskbar
If you want to keep an eye on your ping without opening the command prompt, you can use lightweight applications like PingoMeter on Windows. It's portable, runs from the taskbar, and displays a small color-coded graph (green, yellow, or red) depending on the latency.
You can configure colors, polling intervals, the ping destination (by default, Google DNS), and even alerts when the connection is lost or a certain latency threshold is exceeded. It's a very convenient way to know at a glance if your network is running smoothly or if something is slowing it down.
Apps for Android and iOS
On mobile phones and tablets, you can also measure your Wi-Fi or mobile data latency with dedicated apps. Tools like Fing, He.net Network Tools, NetX Network Tools (Android), or Network Ping Lite and iNetTools (iOS) allow you to ping, discover devices on the network, and check if your home Wi-Fi is performing as it should.
Latency and businesses: impact on business and cybersecurity
In corporate environments, latency is not just a technical annoyance, but a factor that directly affects productivity , user experience, and cybersecurity risk management .
A network with high latency can slow down access to critical applications, private clouds, ERPs, CRMs, or collaboration tools, resulting in slower processes, frustrated employees , and a higher likelihood of errors.
On the other hand, a poorly designed or under-resourced ISMS may not be able to effectively mitigate the impact of latency on monitoring systems, event correlation, or incident response. This complicates compliance with standards such as ISO 27001 and passing audits.
Applying best practices such as using fiber optics whenever possible, redundant links, continuous monitoring (PDCA of ISO 9001) and prioritization of critical traffic is key to keeping latency within acceptable margins and reducing exposure to risk.
Advanced tips for reducing latency in wireless networks
Once the causes have been identified, it's time to troubleshoot the network. Here's a set of practical steps, from the simplest to advanced router settings.
Use Ethernet cable whenever possible
The most effective way to eliminate Wi-Fi problems is to not rely on Wi-Fi . Where possible, connect via Ethernet cable: gaming PCs, consoles, Smart TVs, or NAS devices will all benefit from a stable connection with lower ping and no interference.
Make sure to use cables of at least category 5e (preferably Cat 6 or higher) to guarantee up to 1 Gbps with good quality and without errors that force packet resending.
Optimize your WiFi network: location, band, and channel
Place it in a central and unobstructed spot, away from appliances, corners, and floors. An elevated position, free of nearby obstacles , improves coverage and reduces signal reflections and loss.
Connect your demanding devices (computers, consoles, modern mobiles) to the 5 GHz band , leaving the 2,4 GHz band for older equipment or IoT sensors that don't need that much speed.
Analyze the available channels and choose one that isn't congested. Routers often come set to "auto" and remain on very busy channels; a manual adjustment can significantly reduce average latency and jitter.
Expand and better distribute coverage
If your home or office is large and the Wi-Fi signal doesn't reach all areas, you can use repeaters, powerline adapters with integrated Wi-Fi, or Wi-Fi mesh systems . Properly configured mesh systems typically offer the best continuous experience with seamless roaming between nodes.
It's important to place these devices where they still receive a good signal from the main router . A repeater placed where there's hardly any coverage will only replicate a weak signal; however, if it's placed halfway along the line, a better balance between coverage and latency is achieved.
Traffic control: QoS, anti-bufferbloat, and limits
Many modern routers have QoS or bandwidth control options in their firmware . Configure them to prioritize traffic for gaming, video calls, VoIP, or specific devices that need it (work PC, main console, etc.).
Some models, especially those geared towards gaming, incorporate anti-bufferbloat features that prevent the router's queue buffers from becoming overfilled. Adjusting these parameters (sometimes slightly reducing the advertised maximum bandwidth) can significantly smooth out ping spikes and reduce bottlenecks.
Reduce background processes and automatic updates
Before starting a competitive game or an important video call, check that there are no downloads, cloud backups, game updates , or mass syncs running on your computer or others on the network.
Many systems allow you to pause or schedule updates for off-peak hours. A simple change in schedule can make the difference between a stable connection and a lag-ridden session.
Keep the equipment clean and up-to-date
Always keep your operating system, network card drivers (both Ethernet and Wi-Fi), games or video calling applications, and, very importantly, your router's firmware up to date . Many updates improve performance, fix latency bugs, and strengthen security.
Don't neglect security: a good antivirus and regular scans prevent hidden malware from overloading the network or consuming resources that result in more slowdowns.
Choosing the right game servers and remote services
In online games that allow you to choose your region or server, always opt for servers as close as possible (for example, Europe if you're playing from Spain, or Latin America). Connecting to servers on another continent can add 100-150 ms of latency simply due to physical distance.
If a particular server is having problems, try others available within the same region: sometimes the problem is not your network, but the game server itself or the specific route your ISP takes to reach it.
When to avoid VPNs and proxies
While gaming, making video calls, or sharing your screen, disable any active VPNs or proxies if possible, unless absolutely necessary. If you have no other option, choose nearby servers and reputable providers that offer low latency.
Latency and CDN: how to improve the response time of websites and services
When we talk about websites and online services, in addition to the user's connection, where and how the content is served also comes into play. Content delivery networks (CDNs) cache static files (images, scripts, styles, etc.) on geographically distributed servers.
This allows users to download resources from a nearby location instead of the original server , shortening routes and improving load times. This, combined with good optimization practices (minimizing code, compressing images, loading non-critical JavaScript last, using lazy loading of content below the fold), reduces both perceived and actual latency.
From the user's perspective, there's little that can be done here except ensure a good local connection (fiber if possible, Ethernet instead of WiFi, updated firmware), but if you manage a website or application, leveraging a CDN and optimizing content is crucial for providing fast responses.
Controlling latency in wireless networks involves a combination of understanding how data travels, detecting where the delay occurs, and applying specific changes to WiFi coverage, cabling, router configuration, equipment, and services you use daily. When you align all these elements, the experience of gaming, video calls, teleworking, or browsing improves immediately, and the dreaded lag ceases to be a regular guest on your network.
