Slow Wi-Fi on a laptop is a problem that every second user faces. You pay for the tariff 100+ Mbit/s, and the speed barely reaches 20-30 Mbit/s, pages take forever to load, and online games lag? The reasons may lie in the settings of the laptop itself, in the configuration of the router, or even in physical interference. In this article we will look at all possible ways to speed up Wi-Fi - from basic to advanced that work on Windows 10/11, macOS and even Linux.

It is important to understand: the connection speed depends on the chain “router → transmission medium → laptop adapter → OS.” Failure at any stage leads to drawdowns. We will not offer “magic buttons”, but will give specific instructions with explanationswhy this or that method works. For example, did you know that overheating of a Wi-Fi adapter can reduce speed by 40-60% even with an ideal signal? Or that Microsoft's standard driver often limits bandwidth?

Let's start with diagnostics and optimization - from simple to complex.

1. Checking the current speed and diagnosing problems

Before you optimize something, you need to understand where exactly is the bottleneck?. Wi-Fi speed depends on three key parameters:

  • 📶 Signal level (dBm) - the closer to 0, the better (for example, -30 dBm perfect, -70 dBm - already weak).
  • 🔄 Channel congestion - if on your channel 2.4 GHz There are 10 neighboring networks, the speed will drop.
  • 🖥️ Adapter performance - older laptops (before 2018) are often limited by the standard 802.11n (max. 150 Mbit/s).

How to check:

  1. Click Win + R, enter cmd, then run the command: 
    netsh wlan show interfaces

    Pay attention to the lines Reception/transmission speed And Signal.

  2. Use utilities like Wi-Fi Analyzer (Android) or NetSpot (Windows/macOS) to analyze channel load.
📊 What is your maximum speed according to the tariff?
  • Up to 50 Mbit/s
  • 50-100 Mbit/s
  • 100-300 Mbit/s
  • 300+ Mbit/s
  • I don't know

Critical indicators: if the speed is in netsh shows 72 Mbit/s and below - the problem is either in the adapter or in the router. If 300+ Mbit/s, but the actual speed in the browser is low - the OS settings or the provider are to blame.

2. Optimizing router settings for maximum speed

Most users never log into their router's control panel after installing it. But in vain: factory settings are often far from optimal. Here's what needs to change first of all:

Parameter Recommended value Why is it important
Wi-Fi mode 802.11ac (or ax, if supported) Old regimes b/g/n limit speed to 150 Mbit/s.
Channel width 40 MHz (for 2.4 GHz) or 80 MHz (for 5 GHz) Narrow channels (20 MHz) reduce throughput.
Channel Manual selection (eg 1, 6 or 11 for 2.4 GHz) Auto select often selects congested channels.
MTU 1472 or 1500 An incorrect value leads to packet fragmentation and lags.

How to change settings:

  1. Open the router panel at 192.168.0.1 or 192.168.1.1 (logins/passwords are usually on a sticker).
  2. Go to section Wi-Fi (or Wireless network).
  3. Set the parameters from the table above. For TP-Link path: Advanced → Wireless; for ASUS: Wireless → Professional.
💡

If there are unknown devices in the list of devices in the router panel, change your Wi-Fi password! They can steal your speed.

⚠️ Attention: If after changing the channel width to 40/80 MHz connection has become unstable, please return 20 MHz. In apartment buildings, wide channels can cause interference.

3. Updating and setting up Wi-Fi adapter drivers

Drivers from Microsoft that are installed automatically via Windows Update, often outdated or “stripped down”. Adapter manufacturers (eg Intel, Qualcomm Atheros, Broadcom) release their own drivers with optimizations for speed and stability.

How to update the driver correctly:

  1. Find out the adapter model: 
    wmic nic where "NetEnabled='true'" get name

    Or in Device Manager (section Network adapters).

  2. Download the driver from the manufacturer's website:
  • Remove the old driver via Device Manager (RMB on adapter → Remove device → check mark Remove driver programs).
  • Install the downloaded driver and restart your laptop.

    • The speed in netsh has increased|The signal has become more stable (fewer jumps)|Ping in games has decreased|The laptop does not overheat-->

    For advanced users: in drivers Intel And Qualcomm There are hidden settings that can be enabled via Registry Editor. For example, the parameter RoamingAggressiveness (default 3) is responsible for the speed of reconnection to the network. It can be changed to 1 for more aggressive roaming:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkList\Signatures\Unmanaged
    ⚠️ Attention: Incorrectly editing the registry can cause Wi-Fi problems. Before making any changes, create a system restore point (Control Panel → Recovery).

    4. Changing the power settings for the Wi-Fi adapter

    Windows by default limits the power consumption of the Wi-Fi adapter to save battery power. This leads to speed drops by 30-50%, especially on laptops with Intel And Realtek adapters. You can fix this manually:

    Instructions:

    1. Open Device Manager (Win + X → Device Manager).
    2. Expand Network adapters, find your Wi-Fi module (for example, Intel Wi-Fi 6 AX200).
    3. RMB → Properties → Power Management.
    4. Uncheck Allow this device to turn off to save power.
    5. Go to the tab Additionally and install:
      • Wireless Mode → 802.11ac (or ax)
      • Roaming Aggressiveness → 1. Lowest (for stability)
      • Transmit Power → Highest (maximum transmit power)

    For macOS similar settings can be changed via System Settings → Energy Saving (disable the option Slightly dim the display when running on battery power, which indirectly affects the performance of the adapter).

    Why does the speed drop when running on battery?

    Windows automatically reduces the performance of the Wi-Fi adapter when running on battery power, even when the laptop is plugged in. This is due to power management policies, which can be disabled via Control Panel → Power Options → Configure power plan → Change advanced power settings → Wireless network adapter settings. Set both modes (battery/mains) to Maximum performance.

    5. Changing the Wi-Fi channel and band (2.4 GHz vs 5 GHz)

    Range 2.4 GHz overloaded - not only routers work on it, but also Bluetooth devices, microwaves, cordless phones. Range 5 GHz less busy, but has a smaller coverage area. How to choose the best option:

    • 📊 2.4 GHz - suitable for large spaces (passes through walls), but the speed rarely exceeds 50-70 Mbit/s in practice.
    • 🚀 5 GHz - speed up to 1 Gbit/s, but the signal is weaker (better for small apartments).
    • 🔄 6 GHz (Wi-Fi 6E) - a new standard, almost without interference, but requires support from the router and adapter.

    How to switch to 5 GHz:

    1. Make sure your router supports 5 GHz (look at the model on the sticker).
    2. In the router panel, enable a separate network for 5 GHz (usually option Enable 5GHz Wi-Fi in section Wireless).
    3. Connect to a new network (its name may end with _5G).

    If 5 GHz unavailable or the signal is weak, try:

    • 📡 Move the router closer to the laptop (or use repeater).
    • 🔧 Manually select a channel on 5 GHz (optimal: 36, 40, 44, 48).
    • 🔄 Enable Band Steering (if available in the router) - automatic switching between 2.4 And 5 GHz.
    💡

    If your laptop is older than 2015, it may not support 5GHz. Check the model specifications on the manufacturer's website.

    6. Advanced Windows settings to speed up Wi-Fi

    Windows 10 and 11 have hidden settings that affect Internet speed. Most of them can be changed via Registry Editor or Local Group Policy.

    Top 3 working tweaks:

    1. Disabling TCP/IP autoconfiguration: 
      netsh int tcp set global autotuninglevel=restricted

      This command limits the TCP buffer, which reduces latency (useful for online games).

    2. Increase Wi-Fi priority: 
      netsh wlan set hostednetwork mode=allow

      Then in Device Manager disable any unnecessary network adapters (for example, VirtualBox or Bluetooth PAN).

    3. Disable QoS: 
      gpedit.msc → Конфигурация компьютера → Административные шаблоны → Сеть → Планировщик пакетов QoS → Ограничить резервируемую пропускную способность

      Set value 0% (by default Windows reserves 20% channel).

    For Linux (Ubuntu/Debian) acceleration is achieved through settings iwconfig:

    sudo iwconfig wlan0 txpower 30  # Увеличение мощности передачи

    sudo iw dev wlan0 set power_save off  # Отключение энергосбережения

    ⚠️ Attention: Changing registry and group policy settings can cause network instability. Before experimenting, create a restore point (Control Panel → Recovery → Set up system recovery).

    7. Physical ways to improve Wi-Fi signal

    Sometimes the problem lies not in the settings, but in physical interference. Here's what you can do without buying new equipment:

    • 📍 Router positioning: place it in the center of the apartment, at a height 1.5-2 m from the floor. Avoid proximity to metal objects and mirrors.
    • 🔌 Antenna replacement: if the router has removable antennas, buy directional ones (for example, TP-Link TL-ANT2408CL for ~1000 ₽).
    • 🛡️ Shielding: wrap the router with foil on one side (an improvised reflector) - this will strengthen the signal in the desired direction.
    • 🌡️ Cooling: If the router gets hot, place it on a cooling pad (overheating reduces the speed by 20-40%).

    If all else fails, consider purchasing:

    • 📶 Wi-Fi repeater (For example, Xiaomi Wi-Fi Repeater 2 for ~1500 ₽) - enhances the signal in dead zones.
    • 🖧 USB Wi-Fi adapter (For example, TP-Link Archer T4U with support 802.11ac) - if the built-in adapter is weak.
    • 🔄 Mesh systems (For example, TP-Link Deco) - for large houses (price from 10 000 ₽).

    8. Alternative Methods: VPN, DNS and Background Restriction

    Sometimes the speed drops not because of Wi-Fi, but because of:

    • 🔒 Traffic throttling by the provider (artificial speed limit for torrents or streaming).
    • 🌍 Slow DNS servers (by default, the provider's DNS is used, which may be overloaded).
    • 📱 Background updates (Windows, antivirus, cloud services steal traffic).

    How to fix:

    1. Change DNS:
      • 🔹 1.1.1.1 (Cloudflare) - fastest for most regions.
      • 🔹 8.8.8.8 (Google DNS) - stable, but sometimes slower.
      • 🔹 77.88.8.8 (Yandex DNS) - optimized for Russia.

      You can change DNS in Control Panel → Network and Internet → Network and Sharing Center → Change adapter settings → IPv4 Properties.

    2. Disable background updates: 
      Параметры → Обновление и безопасность → Дополнительные параметры → Оптимизация доставки → Ограничить загрузку в фоновом режиме
    3. Use a VPN to bypass throttling:
      • 🔹 ProtonVPN (free, no logs).
      • 🔹 Windscribe (10 GB of traffic per month for free).
    Important: A VPN can either speed up or slow down your connection—test different servers.
    💡

    If the speed increased after the DNS change, the problem was due to delays in name resolution (latency). This is especially noticeable in online games and when opening websites.

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

    ❓ Why is the speed over cable higher than over Wi-Fi, even if the router supports 1 Gbps?

    Wi-Fi is always slower than Ethernet due to:

    • Wireless transmission losses (interference, distance).
    • Limitations of the standard (for example, 802.11ac really gives ~500 Mbit/s, not 1 Gbit/s).
    • Encryption overhead (WPA3 reduces speed by 10-15%).

    If the difference is greater 2-3 times, check your router settings and adapter drivers.

    ❓ Can an antivirus slow down Wi-Fi?

    Yes, especially if it includes:

    • Scanning traffic (for example, in Kaspersky or ESET).
    • Firewall with deep packet inspection.
    • Cloud protection (constantly sends data to antivirus servers).

    Solution: Disable Scanning network traffic in the antivirus settings or add the browser/game to exceptions.

    ❓ How to check if my neighbor is stealing my Wi-Fi?

    Diagnostic methods:

    1. Go to the router panel (192.168.0.1) and look at the list of connected devices (DHCP Clients List or Connected Devices).
    2. Use the utility Wireless Network Watcher (shows all devices on your network with MAC addresses).
    3. Check the traffic: if the laptop is idle and the router shows active loading, someone is using your Wi-Fi.

    Solution: Change the password to WPA3 (not WPA2!) and turn it off WPS (this is a vulnerable protocol).

    ❓ Why does the speed drop in the evening?

    This is due to:

    • Provider network overload (peak time - from 19:00 to 23:00).
    • Interference from neighboring routers (everyone is on the Internet at the same time).
    • Provider throttling (speed limit for torrents/streaming).

    Solutions:

    • Switch to 5 GHz (there is less interference there).
    • Use a VPN to bypass throttling.
    • Complaining to the provider sometimes helps.
    ❓ Which laptops have the best Wi-Fi adapters in 2026?

    Top 5 models with the fastest adapters (Wi-Fi 6/6E, speed up to 2.4 Gbps):

    1. Apple MacBook Pro M3 (adapter Broadcom BCM4387).
    2. ASUS ROG Zephyrus G14 (Intel Wi-Fi 6E AX210).
    3. Lenovo ThinkPad X1 Carbon Gen 11 (Intel Wi-Fi 6E AX211).
    4. Dell XPS 15 (Killer Wi-Fi 6E AX1675).
    5. MSI Raider GE78 HX (Intel Wi-Fi 6E AX211 + antennas 4x4 MU-MIMO).

    Budget laptops (up to 50 000 ₽) are usually equipped with adapters Realtek RTL8821CE or Intel AX200, which are limited by speed ~600 Mbit/s.