How to improve Wi-Fi performance on a laptop: from diagnostics to adapter firmware upgrades

Slow internet, constant connection drops, or a weak Wi-Fi signal on a laptop are a familiar problem for many users. Even if the router provides stable 500 Mbps on a smartphone, the laptop may stubbornly "slow down" 2.4 GHz or losing data packets. The reasons lie not only in the distance from the router, but also in the settings. network adapter, drivers, interference from other devices, or even physical limitations 802.11ac/ax standard.

In this article we will analyze 10 proven methods Improve your laptop's Wi-Fi — from basic (restarting the router) to advanced (manually setting channels and updating the adapter firmware). All methods have been tested Windows 10/11 And macOS Ventura/Sonoma, and are also compatible with most laptop models: ASUS ROG/ZenBook, Lenovo Legion/IdeaPad, HP Pavilion/Omen, Dell XPS/Inspiron and others. If you are unsure of the technical details, use FAQ at the end of the article.

First, let's determine where exactly the bottleneck is: the laptop, the router, or external factors. To do this, simply run 3 quick tests:

1. Diagnosing the problem: Where is the signal being lost?

Before optimizing your settings, you need to determine whether the laptop or the router/network is at fault. Start with the simple:

• 📶 Check the speed on other devices. Connect your smartphone, tablet, or second laptop to the same network. If the speed is slow everywhere, the problem is with your router or ISP. If it's only on your laptop, read on.
• 🔄 Reboot your router. Unplug it from the power outlet for 30 seconds. This will clear the cache and temporary errors. After plugging it back in, wait 2-3 minutes for the router to sync with your ISP.
• 🖥️ Test on another channel. In the router settings (192.168.0.1 or 192.168.1.1) change the channel 2.4 GHz With Auto on 6 or 11 (less busy). On 5 GHz try the channels 36–48.

If after these steps the speed has not increased, proceed to the laptop settings. It's especially critical to check your network adapter drivers—outdated versions can limit speeds to 54 Mbps, even on modern routers with Wi-Fi 6 support.

⚠️ Attention: If your laptop is older than 2018, it may not support Wi-Fi 5 (802.11ac) or Wi-Fi 6 (802.11ax)In this case, the maximum speed is 2.4 GHz limited 150 Mbps, and on 5 GHz — 433 Mbps (For 802.11n).

2. Updating network adapter drivers

Outdated or faulty drivers are one of the main causes of poor Wi-Fi performance. Laptop (and adapter) manufacturers regularly release updates to fix compatibility issues with new standards. Wi-Fi 6E or WPA3.

To update the driver:

1. Click Win + X and select device Manager.
2. Expand the branch Network adaptersFind the device with the names Wireless, Wi-Fi or 802.11 (For example, Intel Wi-Fi 6 AX200, Qualcomm Atheros QCA61x4, Realtek RTL8821CE).
3. Right click → Update driver → Automatic search.

If Windows doesn't find any updates, download the driver manually from the laptop or adapter chip manufacturer's website:

⚠️ Attention: After updating the driver, restart your laptop. If Wi-Fi is completely lost, roll back the driver using Device Manager → Adapter Properties → Driver → Roll Back Driver.

Download the driver from the official website|Delete the old driver via Device Manager|Install the new driver|Restart your laptop|Check the speed at speedtest.net-->

3. Optimizing adapter settings in Windows

Even with up-to-date drivers, Windows may limit Wi-Fi performance due to power-saving settings or incorrect adapter settings. Let's fix this:

Open device Manager, find your Wi-Fi adapter and go to Properties → AdvancedThere are several key parameters that need to be changed here:

• 🔋 802.11n/ac Wireless Mode → Install Auto or 802.11ac (if the router supports it).
• 📡 Roaming Aggressiveness → Put 3. Medium (for stable switching between points).
• 🔄 Transmit Power → Select Highest (maximum transmit power).
• 🛡️ Wireless Mode → If there is an option 802.11a/b/g/n/ac/ax, select it.

Also turn it off energy savings for adapter:

1. In the adapter properties, go to the tab Power management.
2. Uncheck the box Allow the computer to turn off this device to save power.

4. Choosing the Right Frequency: 2.4 GHz vs. 5 GHz vs. 6 GHz

Modern routers support three ranges:

• 2.4 GHz - large range, but low speed and strong interference from neighbors.
• 5 GHz - high speed (up to 1 Gbps), but smaller radius and poor penetration through walls.
• 6 GHz (Wi-Fi 6E) - minimal interference, speed up to 2 Gbps, but is only supported by new devices (2021+).

How to choose the optimal range for a laptop:

To connect to 5 GHz or 6 GHz, the network name (SSID) in the router must be different from 2.4 GHz. For example:

• MyWiFi_2G - For 2.4 GHz.
• MyWiFi_5G - For 5 GHz.

How do I know what range my laptop is currently using?

Open Settings → Network & Internet → Wi-Fi → Manage known networksClick on your network and view its properties. In the line Network type the range will be specified (2.4 GHz or 5 GHz). On macOS: hold Option and click on the Wi-Fi icon in the menu bar → frequency information will open.

5. Eliminate interference from other devices

Wi-Fi operates on the same frequency as many household appliances: microwaves, wireless headphones, Bluetooth speakers, baby monitors and even USB 3.0 devicesThey create interference, especially on 2.4 GHz.

How to reduce the impact of interference:

• 🍳 Microwave: Do not use it simultaneously with important tasks (for example, during an online game or video conference).
• 🎧 Bluetooth devices: Turn off your headphones or keyboard if they are operating on the frequency 2.4 GHzSwitch them to 5 GHz (if supported).
• 🔌 USB 3.0: If external hard drives or hubs are connected to the laptop USB 3.0, try turning them off - they create interference in the range 2.4 GHz.
• 📡 Neighbours: Use apps like Wi-Fi Analyzer (Android) or NetSpot (Windows/macOS) to search for free channels.

If interference cannot be avoided, move on to 5 GHz or use Mesh systems (For example, TP-Link Deco, ASUS ZenWiFi), which automatically select the least loaded channel.

6. Advanced settings: QoS, MU-MIMO, and Beamforming

If basic methods don't help, it's time to dig deeper. Modern routers support technologies that can significantly improve Wi-Fi stability for your laptop:

• 🎯 Beamforming: The router directs the signal directly to your device, rather than dispersing it in all directions. This can be enabled in the router settings (section Wireless → Advanced).
• 👥 MU-MIMO: Allows the router to communicate with multiple devices simultaneously (useful if you have a lot of gadgets). Works only with Wi-Fi 5/6.
• 🚀 QoS (Quality of Service): Prioritizes laptop traffic over other devices. Customize by MAC address laptop (you can find it in the command line: ipconfig /all → line Physical address).

An example of setting up QoS on a router ASUS RT-AX88U:

1. Go to the web interface (192.168.50.1).
2. Go to Adaptive QoS → Bandwidth Limiter.
3. Add a rule for MAC addresses laptop with priority Highest.

⚠️ Attention: Settings Beamforming And MU-MIMO must be supported by both the router and the laptop adapter. For example, Intel Wi-Fi 6 AX200 works with MU-MIMO, and the old one Realtek RTL8188EE - No.

7. Hardware solutions: antennas, repeaters, Mesh

If software methods have been exhausted and the signal is still weak, it is time to consider hardware improvements:

• 📡 External antenna: For laptops with detachable antennas (eg. Dell Latitude or Lenovo ThinkPad) you can buy an antenna with amplification 5–9 dBi (For example, TP-Link TL-ANT2408CL).
• 🔄 Repeater: It's installed between the router and the laptop. It'll do. TP-Link RE605X (supports Wi-Fi 6).
• 🌐 Mesh system: Replaces a regular router and covers a large area without sacrificing speed. Ideal for large apartments: ASUS ZenWiFi AX or Netgear Orbi.
• 🖥️ USB adapter: If the built-in Wi-Fi is weak, connect an external adapter (for example, TP-Link Archer TX3000E with support Wi-Fi 6).

When choosing a repeater or mesh system, pay attention to:

• Support Wi-Fi 6 (if you have a modern laptop).
• Availability of a port Gigabit Ethernet (for cable connection, if needed).
• Maximum speed in 5 GHz (not less than 867 Mbps).

8. Alternative methods: disabling IPv6, changing DNS, resetting the network

Sometimes the problem isn't with the signal, but with your network settings. Try these less obvious solutions:

• 🔢 Disable IPv6:
  1. Go to Settings → Network & Internet → Wi-Fi → Configure adapter settings.
  2. Right-click on your connection → Properties.
  3. Uncheck the box Internet Protocol version 6 (TCP/IPv6).

🔤 Change DNS: By default, providers use slow DNS. Change them to 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google).

🔄 Network reset: In Windows: Settings → Network & Internet → Status → Network resetOn macOS: Remove the network in System Preferences → Network and reconnect.

If nothing helps, check your laptop for viruses (for example, using Malwarebytes) - some malware consumes traffic in the background.

FAQ: Frequently asked questions about Wi-Fi on a laptop

🔍 Why does my laptop show a weak signal, but my phone shows full signal?

This is due to several factors:

• Smartphones often use more modern Wi-Fi chips (for example, Qualcomm FastConnect 6900 V Samsung Galaxy S23).
• Antennas in phones are usually located closer to the top of the case, where there is less interference.
• Laptops often save energy by reducing the power of the Wi-Fi adapter.

Solution: Update the adapter driver on your laptop and disable power saving (see Section 3).

⚡ Is it possible to boost Wi-Fi without buying new equipment?

Yes, try:

1. Change channel and band (2.4 GHz → 5 GHz).
2. Update the router driver and firmware.
3. Turn off interference (microwave, Bluetooth devices).
4. Configure QoS on the router to prioritize the laptop.

If this doesn't help, consider purchasing an external USB adapter (cost from 1,500 ₽).

🖥️ Why is Wi-Fi slow only on Windows, but fine on macOS/Linux?

Most often, this is a driver issue. Windows doesn't always correctly detect the Wi-Fi adapter's parameters, especially for devices with chips. Realtek or MediatekSolutions:

• Uninstall the current driver via device Manager and install the version from the laptop manufacturer's website.
• Disable the feature Auto-Tuning In Windows: Run Command Prompt as Administrator and enter:

  netsh int tcp set global autotuninglevel=restricted

• Check your settings TCP/IP: Sometimes manual installation helps MTU (optimal value - 1472).

🛠️ How do I check if my laptop supports Wi-Fi 6?

There are several ways:

1. Check the adapter model in Device Manager. If the title contains AX (For example, Intel Wi-Fi 6 AX200) — supported.
2. Launch the command prompt and enter:

   netsh wlan show drivers

   In the line Radio type must be specified 802.11ax.

3. Check the specifications of your laptop model on the manufacturer's official website.

If the adapter does not support Wi-Fi 6, but the router - yes, it makes sense to buy an external USB adapter (for example, ASUS USB-AX56).

📶 Can I use my laptop as a Wi-Fi repeater?

Technically yes, but it's inefficient. A laptop isn't optimized for signal retransmission, and speed will drop by 2-3 times. It's better to buy a specialized repeater (starting at 2,000 rubles).

If you still want to try:

• On Windows: Use the function Mobile hotspot (Settings → Network & Internet).
• On macOS: System Preferences → Sharing → Internet Sharing.

Cons:

• The laptop must be kept on at all times.
• The speed will be lower due to double retransmission (router → laptop → device).