Every user is familiar with the situation where the router's lights are on, but the internet connection is dead. You try to load a page, but it freezes, or a video conference turns into a choppy slideshow. This can be frustrating, especially if you're stuck working or need to resolve an important issue urgently.
The problem can be hidden in dozens of places: from simple channel congestion by neighbors to physical damage to the provider's cable. Users often blame the equipment, although the problem lies in software conflicts or improperly placed access points. Understanding the nature of the failure is the first step to recovery. high speed.
In this article, we'll cover all aspects that affect wireless network performance. We won't use complex technical terms without explanation, but rather break down the diagnostic process so you can troubleshoot the issue yourself.
Speed diagnostics and provider check
Before tweaking your router settings, it's important to rule out external factors. Often, the problem isn't with your equipment, but with your service provider. Connect your provider's cable directly to your computer or laptop, bypassing the router, and run a speed test. If the speed remains low, call your provider's technical support.
However, if the speed via cable matches the plan's rate, but drops significantly via Wi-Fi, the bottleneck is within your local network. Use specialized services, such as Speedtest or Fast.comTo obtain objective data, measure your speed at different times of day to track the dependence on network load.
Pay attention to the difference between your incoming and outgoing speeds. If your ping (response time) is too high, even with a good loading speed, pages will load slowly. This often happens when your bandwidth is overloaded or there are issues with your DNS servers.
⚠️ Attention: If you're using a plan with limited data or an "unlimited" plan with a Fair Use Policy (FUP), your provider may artificially reduce your speed after you've reached a certain gigabyte limit. Check your subscriber account.
Physical obstacles and router placement
A Wi-Fi signal uses radio waves, which have difficulty penetrating dense materials. Concrete walls with rebar, mirrors, aquariums, and even thick leaves on houseplants can significantly weaken the signal. If the router is located in an alcove, behind a TV, or on the floor, expect reduced performance.
The ideal location for an access point is in the center of the apartment on a hill. The antennas should point vertically upward. If you have a dual-band router, keep in mind that the range 5 GHz has less penetrating power, but provides higher velocity at short distances.
It's also worth considering the impact of household appliances. Microwaves, cordless phones, and Bluetooth devices create significant interference in the 2.4 GHz band. Try to move your router away from the kitchen and other sources of electromagnetic radiation.
Distance also plays a critical role. A standard home router can reliably cover an area of approximately 50-70 square meters in an open space. In an apartment with partitions, the range is reduced. If the living space is large, a single device may not be sufficient.
Wireless channel congestion
In apartment buildings, the airwaves are literally clogged with signals from neighboring routers. When dozens of devices are using the same channel, data collisions occur, and speeds drop for everyone. This is one of the most common reasons why internet performance is slow in the evening.
To solve the problem, you need to switch to a free channel. In the router settings (usually in the Wireless or Wi-Fi) find the parameter ChannelBy default it is there Auto, but the automation does not always work correctly.
Use broadcast analysis tools to find the least congested channel number. For the 2.4 GHz band, it's recommended to use only channels 1, 6, or 11, as they don't overlap. For 5 GHz, there's a wider selection of channels, and conflicts are less common.
| Range | Maximum speed (theoretical) | Penetration ability | Interference level |
|---|---|---|---|
| 2.4 GHz | up to 150-600 Mbit/s | High | Very tall |
| 5 GHz | up to 866-1700+ Mbps | Low | Short |
| 6 GHz (Wi-Fi 6E) | up to 9.6 Gbps | Very low | Minimum |
⚠️ Attention: Router settings interfaces from different manufacturers (TP-Link, ASUS, Keenetic, MikroTik) may differ. Tab names and parameters may vary, but the basic functionality remains the same.
What to do if all channels are busy?
If you live in a densely populated area and there are no available channels, it makes sense to upgrade to the 5 GHz band. If your router is older and doesn't support 5 GHz, consider upgrading to a newer model with Wi-Fi 6 support, which handles dense airwaves better.
Outdated Wi-Fi equipment and standards
Technology is advancing rapidly, and a router purchased 7-10 years ago may not be able to handle modern data plan speeds. Older devices operate according to the standard 802.11n, which is limited in speed and spectrum efficiency.
Furthermore, routers tend to overheat. If the device is stored in a closed cabinet or exposed to direct sunlight, the processor may throttle (reduce its frequency), leading to performance drops and connection interruptions. Check the device's case temperature.
It's also worth considering the number of connected clients. Cheap models can handle 5-10 devices. If you have a smart home system with dozens of sensors, plus phones, laptops, and 4K TVs, a budget router will simply choke.
Antennas are another important component. Detachable antennas can oxidize over time at the connection point. If the antennas are non-detachable, it's difficult to check them, but if they are detachable, try carefully adjusting them or replacing them with more powerful ones (with a higher dBi gain).
Software problems and drivers
Often, it's not the internet that's slowing you down, but the software on your device. Outdated wireless adapter drivers may not work correctly with new encryption standards or protocols.
Go to the Device Manager (in Windows this is done through Control Panel → System → Device Manager) and locate your network adapters. If the icon has an exclamation mark or the driver is several years old, it needs to be updated. Download drivers only from the official website of the laptop or motherboard manufacturer.
Also check your power saving settings. Windows may disable the adapter to save power, which can cause instability. In the adapter properties, under the "Power Management" tab, uncheck "Allow the computer to turn off this device to save power."
☑️ Check drivers and software
Don't forget about background processes either. Torrents, cloud syncing services, and Steam or Windows game updates can all quietly eat up your bandwidth. Check your task manager and close any unnecessary programs that are consuming bandwidth.
Security settings and third-party connections
It's possible your neighbor has connected to your Wi-Fi. If the password is weak or the encryption protocol is outdated WEPEven a novice can easily hack a network. This not only steals traffic but also threatens the security of your data.
Go to the router's web interface (usually at 192.168.0.1 or 192.168.1.1) and look at the list of connected clients (Client List or Wireless Status). If you see an unfamiliar device, change the password immediately.
Use a strong encryption protocol WPA2-PSK or WPA3The password must be complex and contain mixed-case letters, numbers, and special characters. It is also recommended to disable this feature. WPS, as it has known vulnerabilities.
⚠️ Attention: After changing your password or security settings, all your devices will need to be reconnected using the new access key.
FAQ: Frequently Asked Questions
Why is Wi-Fi speed always lower than cable speed?
Wireless connections are half-duplex (the device cannot simultaneously receive and transmit data at full speed) and are susceptible to packet loss due to interference. Actual Wi-Fi speeds are typically 50-70% of the theoretical speed of the plan.
Can a virus slow down the internet?
Yes, malware can use your computer to mine cryptocurrency or send spam attacks, which completely overloads your bandwidth. Run a full system scan with an antivirus program.
Will buying an expensive router help if my data plan is slow?
A router can't create speed out of thin air. If your ISP offers 20 Mbps, a 10,000-ruble router will also offer 20 Mbps. However, it will provide a more stable connection without interruptions.
How often should I reboot my router?
It's recommended to reboot your device at least once a week. This clears the RAM of errors and allows the router to reselect the least congested channel.