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Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)

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Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)

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Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)
Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)
2024-12-23 09:36:50 - last edited 2025-01-14 07:41:04
Tags: #Network Connectivity #Internet Speed
Model: Archer C80  
Hardware Version: V20
Firmware Version: 1.14.3 Build 241025 Rel.69449n(5553)

I have a 300 Mbps internet connection and use the TP-Link Archer C80 router. After approximately 8-9 hours of usage, the internet speed drops significantly to around 90-100 Mbps. However, when I unplug and replug the WAN cable, the speed restores to 300 Mbps temporarily before the cycle repeats.

Could this be due to a firmware or hardware-related issue? Has anyone else experienced a similar problem, and are there any permanent solutions to prevent the speed drop?

Let me know if additional information is required.

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Re:Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)-Solution
2024-12-24 09:11:43 - last edited 2025-01-14 07:41:04

Hi  @HimanshuRahi,

When the issue occurs, please log in to the web interface of router. Please check what is the negotiation speed of WAN, LAN port?

Go to Network Map-->Archer C80-->Ethernet Status

 

Auto-negotiation allows a port on a router to communicate with the wired device to determine the optimal duplex mode and speed for the connection. 
To enable the Auto-Negotiation on the internet port, Please log into your router's web management page by visiting: https://tplinkwifi.net
Then go to Advanced->Network->Internet-> Internet Port Negotiation Speed Setting and select "Auto-Negotiation". You can also set the port to "1000Mbps Full Duplex".

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: △Pre-release Firmware for Archer AX50 Introduces New Parental Control Features and Enhancements △Introducing AI QoS: Elevate Your Gaming Experience on the Archer GE800 Gaming Router △Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN △Tether KidShield Test Recruitment - Safeguarding Children's Online Experience If you found the post or response helpful, please click Helpful. If an answer solves your problem, click "Recommended Solution" so that others can benefit from it.
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Re:Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)-Solution
2024-12-24 09:11:43 - last edited 2025-01-14 07:41:04

Hi  @HimanshuRahi,

When the issue occurs, please log in to the web interface of router. Please check what is the negotiation speed of WAN, LAN port?

Go to Network Map-->Archer C80-->Ethernet Status

 

Auto-negotiation allows a port on a router to communicate with the wired device to determine the optimal duplex mode and speed for the connection. 
To enable the Auto-Negotiation on the internet port, Please log into your router's web management page by visiting: https://tplinkwifi.net
Then go to Advanced->Network->Internet-> Internet Port Negotiation Speed Setting and select "Auto-Negotiation". You can also set the port to "1000Mbps Full Duplex".

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: △Pre-release Firmware for Archer AX50 Introduces New Parental Control Features and Enhancements △Introducing AI QoS: Elevate Your Gaming Experience on the Archer GE800 Gaming Router △Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN △Tether KidShield Test Recruitment - Safeguarding Children's Online Experience If you found the post or response helpful, please click Helpful. If an answer solves your problem, click "Recommended Solution" so that others can benefit from it.
Recommended Solution
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Re:Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)
2024-12-28 09:10:28

  @Joseph-TP As you mentioned, I have changed the Negotiation Speed to 1000 Mbps/full duplex. Will the speed not drop now?

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Re:Speed Drops on Archer C80 Router After 8-9 Hours (WAN Replug Resolves Issue)
2024-12-30 06:25:25

Hi  @HimanshuRahi,

Did you test the internet again after you changed the Negotiation Speed to 1000 Mbps/full duplex? Is the speed stable?

 

 

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: △Pre-release Firmware for Archer AX50 Introduces New Parental Control Features and Enhancements △Introducing AI QoS: Elevate Your Gaming Experience on the Archer GE800 Gaming Router △Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN △Tether KidShield Test Recruitment - Safeguarding Children's Online Experience If you found the post or response helpful, please click Helpful. If an answer solves your problem, click "Recommended Solution" so that others can benefit from it.
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