Ping spikes only on 2.4GHz

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Ping spikes only on 2.4GHz

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Ping spikes only on 2.4GHz
Ping spikes only on 2.4GHz
2023-07-23 16:35:52 - last edited 2023-07-24 01:42:29
Tags: #ping
Model: Archer C6  
Hardware Version: V4
Firmware Version: 1.12.10 Build 230208 Rel.38553n(4252)

I'm having constant ping spikes on a ~10 seconds pattern when I ping the router using my W10 PC, but only when connected to the 2.4GHz network. Sometimes the ping is high like +1000ms, sometimes a timeout is given.

 

Router ping:

 

2.4GHz in my region:

 

This makes online playing and remote desktop working basically impossible. I've already tried a bunch of things like disabling one mesh feature on the router, updating the router firmware (it's the latest), resetting windows network settings, testing different driver versions of my Wifi adapter (including a chipset one) and so on.

 

So far the only workaround I've found is to force the connection to the 5GHz network. Strangely this behavior not occurs on my android phone. Did a new test today and the problem also occurs, but the ping spikes are way lower than on my PC:

 

 

My Wifi adapter is an Archer T4E, but the problem also occurs when testing with an Archer T3U. A brief test with a TL-WN823N (2.4GHz only) not showed this issue, Tested again and it also happens with the TL-WN823N:

 

so it could be something related to the 2.4GHz / 5GHz commutation. Disabled all networks in the router except the 2.4GHz and the problem persists.

 

EDIT----------------

 

Downgraded the firmware to the 221212 version but the issue persists. Tried to downgrade even further to the 220425 version, but the router didn't accept the file.

 

Did a ping test on a D-Link DIR-615 (2.4GHz only) standing next to the (turned off) Archer C6. No problems:

  

 

So the problem is not related to a possible traffic jam over the 2.4GHz.

 

I'm thinking that the Archer C6 V4 have a poor 2.4GHz signal/stability, as the DIR-615 performs perfectly fine standing next to it, and I've had a previous version of this Archer C6 router that didn't have this issue, sadly it died out of nowhere and I received this new version from the warranty.

 

EDIT 2--------------------------------

 

Connected to the 2.4GHz guest network, did a ping test and the problem was gone. Returned to the 2.4GHz default network and did the test again, the issue returned. Went back to the guest network, the issue was gone again. Returned to the default network and... the issue returned. Definitely it's a software issue related to the default 2.4GHz network of the router, so only a firmware update will fix this.

 

I'm not prone to wait the good will of TP-Link to (eventually) release a new firmware to fix this, so I'm thinking of sending it to RMA and demand a different router with similar specs in return.

 

EDIT 3--------------------------

 

Disabling smart connect function and giving unique names to the 2.4GHz and 5GHz networks seems to fix this problem. Giving the same name to each network (or turning on smart connect) makes the issue return. The guest network test above was made with the 5GHz guest disabled, so it makes sense to say that smart connect / same SSID causes the 2.4GHz network to become unstable.

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#1
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Re:Ping spikes only on 2.4GHz
2023-07-26 01:38:46

  @ClaudioDuarte 

 

Hi, thank you very much for the feedback and update.

If you disable Smart Connect and use different names for the two bands, please check which 2.4G channel it is using, then set the same name again and make sure 2.4G channel is still the same one, if not, try to change 2.4G channel manually, then test if the issue still persists or not.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer BE550 New Software Enhances System Stability and Optimizes MLO Network Stability. TL-WA3001 Supports EasyMesh, Speed Limit, Guest Network in AP Mode and/or Multi-SSID Mode. 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:Ping spikes only on 2.4GHz
2023-07-26 14:33:02 - last edited 2023-07-26 14:55:10

  @Sunshine thanks for the reply! Tried this and in both cases the channel in use is 6.

 

EDIT-------------------

 

A brief moment later it changed the channel to 8 but maintained the ping issue, so I reverted manually to 6 but the problem persisted. Then I setted it to auto and the channel in use became 7, but again the issue persisted. In all tests the 2.4 and 5ghz bands were with the same name. Reverting back to different names solved the ping issue.

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Re:Ping spikes only on 2.4GHz
2023-07-31 11:11:55

  @ClaudioDuarte 

 

Thank you very much for the update, we will report the case to support engineer for further tests on our end to see if the issue can be reproduced on our end.

For now, you could leave the current settings to ensure a stable connection.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer BE550 New Software Enhances System Stability and Optimizes MLO Network Stability. TL-WA3001 Supports EasyMesh, Speed Limit, Guest Network in AP Mode and/or Multi-SSID Mode. 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:Ping spikes only on 2.4GHz
2023-08-10 21:21:13

Recently the firmware was automatically updated to version 1.13.1 Build 230609 Rel.31746n(4252), but sadly my issue wasn't fixed.

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Re:Ping spikes only on 2.4GHz
2023-08-11 10:50:35

  @ClaudioDuarte 

 

Hi, with the current firmware, if you disable Smart Connect and use different SSIDs, the issue still can be resolved, right?

To assist you efficiently, I've forwarded your case to the TP-Link support engineers who will contact you with your registered email address later. Please pay attention to your email box for follow-up.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer BE550 New Software Enhances System Stability and Optimizes MLO Network Stability. TL-WA3001 Supports EasyMesh, Speed Limit, Guest Network in AP Mode and/or Multi-SSID Mode. 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:Ping spikes only on 2.4GHz
2023-08-11 13:51:32

  @Sunshine Yes, nothing changed at all. Thank you for your support.

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