Archer C5400 downgrades wired and wifi speed to 300mbit until reboot

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Archer C5400 downgrades wired and wifi speed to 300mbit until reboot

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Archer C5400 downgrades wired and wifi speed to 300mbit until reboot
Archer C5400 downgrades wired and wifi speed to 300mbit until reboot
2024-05-15 06:39:12
Model: Archer C5400  
Hardware Version: V2
Firmware Version: 1.2.9 Build 20230907 rel.96516(5553)

I have an issue where my wifi router will sometimes downgrade my internet connection from 940 mbit down / 39 mbit up to about 300mbit down / 34 mbit up. Rebooting the router fixes it, but I've had to reboot the router twice today to fix this. My ISP advertises a 940mbit downstream. Rebooting the cable modem from my ISP does NOT fix it, only rebooting the TP Link router fixes it. Both wired and wifi available bandwidth is affected.

 

Is my router defective or is there something I can do to fix it? I think I made a post about a similar issue 3 or so years ago but my post was deleted from these forums and is no longer appearing (or the search isn't working for me as my post isn't coming up when i search for archer c5400)

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