Simply What Should I Do If My TP-Link Router Speed Slow?

To resolve this poor connection problem on the TP-Link router, carry out the steps mentioned below.

Firmware

First, check if the firmware of the TP-Link router is not outdated.

If now, update it to a newer version.

Access the web interface page of the TP-Link router using its IP address, username, and password.
Navigate to the Wireless page, go to the Channel drop-down menu, and select 1, 6, or 11. These channels are considered to be the best.
You can also try to use some other channels and check if the TP-Link router speed slow problem has been resolved.
Choose an appropriate channel width from the Channel Width drop-down menu.

On the Wireless Security web page, select the radio button next to the Disable Security option.

Choose the 11bgn mixed (2.4GHz) or 11a/n/ac mixed (5GHz) from the Mode drop-down menu.
Now, check if the speed problem has been resolved on the TP-Link router.
If the TP-Link router speed slow issue is persists, reset the TP-Link router by performing any one of the following procedures.

With the TP-Link router turned on, press and hold the WPS/Reset button for approximately 10 seconds.
This will reset the router to the factory default settings.
Wait until it reboots and then configure the router settings again.

Make sure the TP-Link router is turned on.
Visit the web setup page of the TP-Link router using its IP address.
Log in to the router’s web-based setup page by entering the correct credentials in the Username and Password fields.
Navigate to Advanced, select the System Tools option, and click the Backup & Restore tab followed by the Factory Defaults.
Customize the TP-Link router settings again. Now, check if the TP-Link router speed slow issue has been resolved.