How to Fix Slow WiFi on Your Laptop

October 15, 2026 · Luxurious Computers

Your laptop WiFi is noticeably slower than your phone or other devices on the same network. Pages load sluggishly, video streams buffer, and downloads take much longer than they should. Other devices connected to the same router get full speed while the laptop struggles. When WiFi is slow on one specific laptop, the problem is almost always the laptop WiFi adapter, its driver, its configuration, or its physical position relative to the router.

Check the WiFi adapter speed capability

Your laptop WiFi adapter has a maximum speed determined by the WiFi standard it supports. WiFi 4 (802.11n) maxes out at 150 to 300 Mbps theoretical. WiFi 5 (802.11ac) reaches 433 to 1300 Mbps. WiFi 6 (802.11ax) goes higher. Real-world speeds are roughly half the theoretical maximum
Check your adapter in Device Manager. Expand Network Adapters and find the WiFi adapter. The name usually indicates the standard: AC in the name means WiFi 5, AX means WiFi 6. If your adapter is WiFi 4 (802.11n) and your internet plan is faster than 100 Mbps, the adapter is the bottleneck
If your router supports WiFi 5 or WiFi 6 but your laptop only has WiFi 4, upgrading with a USB WiFi adapter that supports AC or AX provides a significant speed boost without replacing the laptop

Connect to the 5 GHz band

Most modern routers broadcast two bands: 2.4 GHz and 5 GHz. The 2.4 GHz band has longer range but is congested and slower (especially in apartments where dozens of networks overlap). The 5 GHz band is faster with less interference but has shorter range
Check which band your laptop is connected to. In Settings, Network and Internet, WiFi, click on your connection and look for the Network Band or Frequency. If it shows 2.4 GHz and the router also has a 5 GHz network, connect to the 5 GHz network instead
If your router uses the same network name for both bands (band steering), the laptop may keep connecting to 2.4 GHz. You can set a preferred band in the WiFi adapter advanced settings or split the router into two separate network names so you can choose 5 GHz explicitly

Update the WiFi driver

An outdated WiFi driver can limit speed, cause disconnections, and prevent the adapter from using the fastest available connection mode. Open Device Manager, right-click the WiFi adapter, and select Update Driver. Choose Search Automatically
For better results, download the latest driver from the laptop manufacturer website or the WiFi chipset manufacturer (Intel, Realtek, Qualcomm, MediaTek). Manufacturer drivers often include performance improvements not available in the generic Windows driver
If WiFi became slow after a Windows Update, the update may have installed a problematic driver. Roll back: open the adapter properties in Device Manager, go to the Driver tab, and click Roll Back Driver

Adjust power management settings

Windows reduces WiFi adapter power when on battery to extend battery life. This lowers the transmit power and may reduce the connection speed. Open Device Manager, double-click the WiFi adapter, go to the Power Management tab, and uncheck Allow the Computer to Turn Off This Device to Save Power
Also check the advanced adapter settings. In Device Manager, open the WiFi adapter properties, go to the Advanced tab. Look for settings like Power Save Mode, Transmit Power, or Roaming Aggressiveness. Set Power Save Mode to Maximum Performance and Transmit Power to Highest
Change the Windows power plan to High Performance when you need maximum WiFi speed. Open Settings, System, Power, and select High Performance (or Best Performance on Windows 11). The Balanced and Power Saver plans may throttle the WiFi adapter

Improve signal strength

WiFi speed depends heavily on signal strength. At one or two bars, the connection drops to the lowest speed tiers. Move the laptop closer to the router and test the speed. If speed improves significantly near the router, distance or obstacles are the problem
Common obstacles that degrade WiFi signal include thick walls (especially concrete or brick), metal objects, microwave ovens, cordless phones on 2.4 GHz, and fish tanks (water absorbs WiFi signals). Position the laptop with a clear line of sight to the router when possible
If the laptop must be far from the router, a WiFi extender or mesh system can provide stronger signal coverage throughout the space. Mesh systems maintain full speed better than traditional range extenders

Reset the network configuration

Corrupted network settings can limit WiFi speed. Open Command Prompt as Administrator and run: netsh winsock reset, then netsh int ip reset, then ipconfig /flushdns. Restart the laptop after running these commands
You can also fully reset the network adapter. Open Settings, Network and Internet, Advanced Network Settings, Network Reset. This removes all network adapters and reinstalls them with default settings. You need to reconnect to your WiFi network and re-enter the password after the reset

Disable WiFi Sense and background scanning

On some Windows versions, background network scanning (looking for better networks to connect to) can interrupt the current connection and reduce throughput. In the WiFi adapter advanced settings (Device Manager, adapter properties, Advanced tab), look for Background Scan and set it to Disabled if available
Check Settings, Network and Internet, WiFi, and disable Connect to Suggested Open Hotspots and any similar auto-connect features. These features periodically scan for networks, which can cause brief speed dips during the scan

Check for interference from other devices

Bluetooth uses the same 2.4 GHz frequency as WiFi. If you have Bluetooth devices actively transferring data (wireless headphones streaming audio, a Bluetooth mouse, a game controller), they can interfere with the 2.4 GHz WiFi signal. Switching to 5 GHz WiFi eliminates Bluetooth interference
USB 3.0 devices and ports emit radio frequency interference in the 2.4 GHz range. If a USB 3.0 external drive or hub is plugged in near the WiFi antenna (which is typically in the laptop display hinge area), it can degrade WiFi signal. Move USB 3.0 devices away from the antenna or use 5 GHz WiFi

Check the WiFi channel width

WiFi adapters can use different channel widths. A 20 MHz channel is more reliable but slower. A 40 MHz channel (2.4 GHz) or 80 MHz channel (5 GHz) doubles or quadruples the bandwidth. In Device Manager, open the WiFi adapter properties, go to Advanced, and check the Channel Width setting. Set it to Auto or the widest available for maximum speed
If the wider channel causes instability (frequent disconnections), the wider channel may be experiencing interference from neighboring networks. In that case, a narrower but more stable channel provides better real-world performance

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If your laptop WiFi is slow and the troubleshooting steps above have not resolved the issue, LuxuriousComputers Repair can diagnose WiFi adapter problems, install optimized drivers, configure adapter settings, and improve your laptop wireless performance.

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