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TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware

TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware

TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-04-24 01:37:20
Tags: #Wi-Fi 7 #MLO Network #Network Connectivity #Firmware Update
Model: Archer BE800  
Hardware Version: V1
Firmware Version: 1.2.3 Build 20250314 rel.45415(4153)

I use TP-Link BE800 Router, After the upgrade to latest firmware, I noticed a significant speed drop over Wi-Fi all the band (5GHz, 6GHz, and MLO.), while the LAN connection remains normal. I tested with multiple devices, and the issue persisted consistently.

 

I also tested using another router on the same network (connected to the same upstream router), and no speed drop issues were observed there — which confirms the issue is specific to the TP-Link BE800.

 

To troubleshoot, I downgraded the firmware to the previous version:
1.2.1 Build 20250108 rel.48985(4153)

 

After the downgrade, Wi-Fi performance returned to normal with no more speed issues.
This leads me to believe the issue is related to the latest firmware version (1.2.3).

Please investigate this further,

 

Thanks!

 

 

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#1
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7 Reply
Re:TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-04-24 09:30:37

Hi@NingSP,

We are sorry that the new firmware brings you a bad experience.
We have not received other similar feedback so far. If possible, can you provide the following information:
1. Did you test the specific speed when the problem occurred?
2. What clients did you test the speed?
3. Which specific bands have the speed reduction problem?

 

Please test the speed at the same node and the same location for comparison:
1. Fixed 5G channel to 36, channel width to 80Mhz, and test the speed of 5Ghz alone;
2. Fixed 6G channel to 69 (PSC), Mode to 802.11BE, channel width is 320Mhz,and test the speed of 6Ghz alone.
Please refer to Changing Channel and Channel Width on a TP-Link Router

 

Check Out the Latest Posts: New Tether App - Provides Accessibility to Customize Settings to Fit Your Preferences 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 Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router
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#2
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Re:TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-04-25 06:48:20

  @Joseph-TP 

 

1. Speed test results when the issue occurred:

When connected via Wi-Fi, the speed dropped to around 200 Mbps (download/upload)
When connected via LAN, the speed was normal at 2000 Mbps, as expected
This clearly indicates the issue only occurs over Wi-Fi

2. Devices used for testing:

- Samsung Galaxy S25 Ultra (Wi-Fi 7 supported)
-iPhone 16 (Wi-Fi 7 supported)
Both devices were tested at close range (less than 2 meters from the router)

3. Bands affected by the speed drop:

The issue occurs on all Wi-Fi bands: 5GHz , 6GHz and MLO.

 

I fixed as your suggest by change 5G to CH 36 (80MHz) , 6G change to CH 69 (PSC) (802.11BE) (320MHz) but problem still found.

 

Thanks.

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#3
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Re:TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-04-27 02:10:25

HI@NingSP,

Thanks for your detailed test result.

 

Please help collect the following information:

 

Please email support.forum@tp-link.com, attaching Forum ID 810326 and test results, and we will have a dedicated person to assist in analysis and follow-up.

 

Thank you.

Check Out the Latest Posts: New Tether App - Provides Accessibility to Customize Settings to Fit Your Preferences 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 Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router
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#4
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Re:TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-04-29 02:10:39

  @Joseph-TP 

 

Yesterday, I upgrade firmware to latest version again. Now it seem back to normal speed.

 

Thank you for your support.

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#5
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Re:TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-04-29 07:03:00

Hi @NingSP,

It sounds goodwink

Please continue to observe for a while, and feel free to contact us if you have any other questions~

Check Out the Latest Posts: New Tether App - Provides Accessibility to Customize Settings to Fit Your Preferences 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 Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router
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#6
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Re:TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-04-30 14:11:25 - last edited 2025-04-30 14:12:16

  @Joseph-TP 

 

So, but ironic.

I just bought one of these units, wifi6 was broadcasting fine.

The device did an auto update to the latest firmware and the 6ghz stopped broadcasting.

 

I thought it was meant to fix this issue and not cause it. :)

 

Rolling back to the same version as Ning fixed it for me.

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#7
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Re:TP-Link BE800 – Speed Drop on Wi-Fi with Latest Firmware
2025-05-06 03:33:55 - last edited 2025-05-06 03:45:46

Hi @Kukis123,

Sorry to hear you're having issues with 6Ghz disappearing after updating the firmware.

 

Ning finally updated the firmware again and the problem did not reoccur. Your issue is different.

For your problem, I suggest you try the following troubleshooting guide first:

  • Reboot the router after you update firmware;
  • Make sure the 6GHz network is enabled and not hidden;
  • Make sure your client device supports 6GHz Wi-Fi.
  • Enable 6Ghz guest network.

 

If you don't mind, please help us collect system log and backup file as below:

How to view and save System Log of TP-Link wireless router

How to create and restore from a backup file on your TP-Link Router

Please email to support.forum@tp-link.com, and we will have a dedicated person to assist in analysis and follow-up.

Check Out the Latest Posts: New Tether App - Provides Accessibility to Customize Settings to Fit Your Preferences 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 Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router
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#8
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Helpful: 2

Views: 609

Replies: 7

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