Change Advanced Wi-Fi Adapter Settings to Improve Slow Performance

Summary: Changing the advanced Wi-Fi adapter settings in Windows may help to prevent slow performance and intermittent connection. Follow the instructions for steps on how to access these settings. ...

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Instructions

Before You Begin

This article provides Wi-Fi Adapter Settings to Improve Slow Performance after completing basic troubleshooting. If you have not already tried the basic steps, refer to our Make Your Home Wi-Fi Better: Boost Speed and Signal library page.

Prerequisites: Before proceeding with these advanced steps, ensure that you have:

  • Physical access to your router - You must be able to physically reach, move, and reposition your Wi-Fi router. Several steps in this guide require relocating the router to a central, elevated position (such as a high shelf) and adjusting its antennas.
  • Know your router model and age - Identify the manufacturer, model number, and approximate age of your router. Older routers may not support modern wireless standards (such as Wi-Fi 5, Wi-Fi 6, or Wi-Fi 7) and may need to be replaced to achieve faster speeds. Check the label on the bottom or back of your router for this information.
  • Know the wireless standard that your router supports - Confirm whether your router supports 802.11n (Wi-Fi 4), 802.11ac (Wi-Fi 5), 802.11ax (Wi-Fi 6), or 802.11be (Wi-Fi 7). This determines the maximum speed that your network can deliver, regardless of any optimization steps. Refer to your router's documentation or the manufacturer's website.
  • Know your Internet Service Provider (ISP) plan speed - Your Wi-Fi speed cannot exceed the maximum speed provided by your ISP subscription.
  • Identify common sources of interference - Before beginning, take note of devices near your router that may cause wireless interference, including:
    • Microwave ovens
    • Bluetooth devices
    • Cordless phones
    • Baby monitors
    • Other Wi-Fi routers or access points from neighbors
    You must move the router away from these sources as part of the optimization steps.
  • Count the devices on your network - Know approximately how many devices (laptops, phones, tablets, smart TVs, IoT devices) are actively connected to your Wi-Fi network. Network congestion from too many simultaneous devices is a primary cause of slow speeds and must be evaluated before making changes.
  • Access to your router's admin settings (optional) - Some advanced recommendations may require logging into your router's administration page (typically accessed using a web browser at 192.168.1.1 or 192.168.0.1). Have your router's admin username and password available. Refer to your router's documentation if you have not changed the default credentials.
NOTE: To find your computer's wireless adapter, see the Dell Knowledge Base Article Find or Identify the Wireless Network Adapter on Your Windows Computer.
NOTE: Depending on your wireless adapter's model, driver version, or operating system, some of the specific options listed below may not be available. Whenever a wireless driver is updated, it is recommended to re-check these settings.

To confirm or change the Advanced Wireless adapter settings, perform the following steps.

  1. Right-click the Windows icon and select Device Manager.
  2. Locate Your Wireless Adapter: Click the arrow next to Network Adapters to expand the device list.
  3. Open Adapter Properties: Double-click your specific wireless adapter.
  4. Access Advanced Settings: Click the Advanced tab.
  5. Modify Property Values: In the Property box, locate the following items in Table 1 (if available) and confirm or update their Value using the corresponding drop-down menu:
Property
Recommended Value
Description & Notes
802.11n Channel Width (2.4 GHz & 5 GHz)
Auto
Allows the adapter to dynamically select the optimal channel width based on the router and network environment.
802.11n / 802.11ax (Wi-Fi 6) Mode
Enabled
Ensures high-throughput capabilities are active. Note: If you experience constant connection drops on newer routers, set to Disabled to force a fallback to older, more stable protocols (like Wi-Fi 5 / 802.11ac).
Preferred Band
Prefer 5 GHz (or 5G First)
Determines which frequency band the card prioritizes when your router uses the same SSID for both bands. This bypasses congested 2.4 GHz frequencies for faster speeds.
Wireless Mode
Highest available protocol
Select the highest standard available in the drop-down menu to ensure compatibility with modern wireless standards. You may manually limit this to 5 GHz only if experiencing band-switching instability.
Roaming Aggressiveness
Lowest (or Medium-Low)
Controls how aggressively the adapter scans for and switches to different access points. Keep low for stationary home devices to prevent connection lag and drops. Set to Medium only on business networks where you physically move between access points.
Transmit Power
Highest (or 5)
Maximizes the broadcast signal strength from your device's adapter to the router or access point.
Throughput Booster / Enhancement
Disabled
Enable only if your computer is the primary/sole device on the network or if prioritizing massive local transfers. Enabling it prevents other devices on the network from having equal Wi-Fi access.
Fat Channel Intolerant
Disabled
Allows the use of wider channel bonding, which improves overall transfer speeds on compatible networks.

Table 1: Advanced Wireless Adapter Settings

 

  1. Save Changes: Click OK to apply your new settings and close the Device Manager.
  2. Restart the computer: Restarting the computer ensures that the settings are properly applied.

Affected Products

Alienware, Dell All-in-One, Dell Pro All-in-One, Dell Pro Max Micro, Dell Pro Max Slim, Dell Pro Max Tower, Dell Pro Micro, Dell Pro Slim, Dell Pro Tower, Dell Slim, Dell Tower, Inspiron, Legacy Desktop Models, OptiPlex, Vostro, XPS, G Series , G Series, Alienware, Dell Laptops, Dell Plus, Dell Pro, Dell Pro Max, Dell Pro Plus, Dell Pro Premium, Inspiron, Latitude, Dell Pro Rugged, Vostro, XPS, Legacy Laptop Models, XPS Tablets, Fixed Workstations, Mobile Workstations, Dell Pro Max Micro XE FCM2250, Dell Pro Max Slim XE FCS1250, Dell Pro Max Tower T2 XE FCT2250, Dell Pro Max 16 XE MC16250, Dell Pro Micro Plus XE QBM1250, Dell Pro Slim Plus XE5 QBS1250, Dell Pro Tower Plus XE5 QBT1250 ...
Article Properties
Article Number: 000132395
Article Type: How To
Last Modified: 07 May 2026
Version:  14
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