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What if the internet connection is slow when the device is connected to the TP-Link ISP-customized devices?

Troubleshooting
Updated 02-14-2026 02:29:16 AM Number of views for this article156
This Article Applies to:

Introduction

Internet speed may be affected by many factors. This FAQ will help you identify the cause of the problem and offer tips to improve performance.

Troubleshooting

Scenario 1: Wired and wireless speeds are both slow

Step 1. Log in to the ISP-customized device via its LAN gateway IP address in a web browser (e.g., Chrome or Firefox).

Note: You can check the LAN gateway IP in the client's network adapter settings. Here we use 192.168.1.1 as an example.

The link to the web-based interface.

Step 2. Disable Parental Controls and QoS.

“Parental Controls” page.

“QoS” page.

Step 3. Disable DoS Protection.

“Firewall & Protection” page.

Step 4. Check the router's Default Gateway setting. ISP models can be configured with multiple WAN connections, and end customers must set the WAN Connection used for Internet access as the Default Gateway to access the Internet normally.

“Default Gateway” page.

Scenario 2: Wireless is slow, while wired speed is normal

Step 1. Log in to the ISP-customized device via its LAN gateway IP address in a web browser (e.g., Chrome or Firefox).

Note: You can check the LAN gateway IP in the client's network adapter settings. Here we use 192.168.1.1 as an example.

The link to the web-based interface.

Step 2. Check the Transmit Power and set it to High.

“Wireless Settings” page.

Step 3. Change the wireless Channel and Channel Width.

“Wireless Settings” page.

Step 4. Check the Link Rate. If the Link Rate is very low, network speed will also be affected. You can improve the Link Rate by reducing obstacles between the router and the client or by relocating the client.

Link Rate of the wireless clients.

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