Deco XE75 serious lag after firmware update to v1.2.6

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Deco XE75 serious lag after firmware update to v1.2.6

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Deco XE75 serious lag after firmware update to v1.2.6
Deco XE75 serious lag after firmware update to v1.2.6
2023-07-17 05:07:04 - last edited 2023-07-26 01:19:48
Model: Deco XE75  
Hardware Version: V1
Firmware Version: 1.2.6

I recently updated the firmware on my Deco XE75 (AXE5400).  The package I purchased included three units and I've had no issues up until now.  Before the upgrade, the firmware version I was running was v1.1.11 (XE75 1.0 en_1.1.11 Build 20230302 Rel. 51700_US_EU_JP_CA_AU_up.bin). 

 

Ever since then, all my devices across my house experience serious lag, regardless whether they are connected to the main unit or satellite unit.  This has been tested via both wired (1GB Ethernet cable) and wirelessly (with both 802.11ac and 802.11ax devices).

 

Everything was running smoothly before the upgrade and now I find I cannot revert to the previous version because the web interface will only update the firmware to newer versions!

 

I've considered completely resetting my router but I understand that firmware will not revert to the original factory installed version, but rather maintain my current version (1.2.6).

 

Anyone else experiencing this?  I'd appreciate any support to help me resolve this, even to get back to firmware v1.1.11!! frown

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Re:Deco XE75 serious lag after firmware update to v1.2.6-Solution
2023-07-25 07:02:12 - last edited 2023-07-26 01:19:48

  @benbeara 

UK V1 

 

latest on website is 1.2.2 , update on app is 1.2.6

Download for Deco XE75 | TP-Link United Kingdom

 

I have come to the conclusion that firmware 1.2.6 introduce some slow down, stuttering on the network ( 3 XE75 - Wireless backhaul ) 25 devices. nothing scientific just using both firmwares for week or so and general responsivness on a 900/900 connection. 

 

Gone back to 1.2.2 via web downgrade using the bin file from the downloaded zip.  so waiting to see if a newer firmware is better ( not sure if any are planned for the XE75 ) 

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Re:Deco XE75 serious lag after firmware update to v1.2.6-Solution
2023-07-25 21:10:37 - last edited 2023-07-26 21:33:50

  @IntrovertSins 

 

Major update - Resolution!

Firstly, I'd like to thank @IntrovertSins for telling me where I could find v1.2.2 as it's not available on the Canadian TP-Link website.  I downloaded it from the UK website, updated my router... and voila!  The lag is gone!  No muss or fuss with IPv6, and the "stutter" is practically non-existent.  This is true for all my devices, including my computers, my apps on my phone/tablet, and even the apps on my smart TV (e.g., YouTube, Prime, etc.).  I'm indebted to @IntrovertSins because before this solution, the situation had become untenable. So much so, as it started to have a major impact on my ability to work.  MS Team meetings would get messed up and disconnect me completely and/or garble my voice to the point that people couldn't understand me (i.e., connection instability causing audio stutter).

 

I was apprehensive this downgrade would work since the app prevented me from downgrading to v1.1.11.  However, that was not the case and now things seem to be quite stable for the past 6+ hours.

 

Thank you, thank you, thank you!!! wink

 

Update part 2

 

For clarity sake, I configured my network with wired back haul (1GB Ethernet switch) .  When I first set up my Deco units (Feb 2023), I noticed that the wired back haul wouldn't work and found out it was due to an incompatibility issue with D-Link switches.  So I upgraded to a TP-Link switch (Mar 2023) and it has worked flawlessly since then... until I upgraded to firmware v1.2.6.  I discovered this incompatibility only after doing much research on the net and various forums. 

 

Update part 3

 

Today, TP-Link responded to my support request and asked me several questions.  They wanted to make sure that my Internet service was stable so I sent them my speed test results with firmware v1.2.6.  The results were fine but it took a while to establish the connection.  After the download portion of the speed test, the "stutter" then reappeared and the upload portion of the test failed (three times in three attempts).  Their last request was for me to connect my computer directly to the modem and run speed test again.  This time, the test ran without any hiccups (whatsoever i.e., no lag, no stutter).  I tried the latter test (direct connection to the modem) on three different computers and they all worked without issue.  This results makes me believe that firmware v1.2.6 is truly the root cause of my problem as I'm not experiencing any issues with firmware v1.2.2.

 

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-17 21:14:00

  @benbeara I also have XE75 and firmware 1.2.6

 

Lag can mean a few things, so my issue might not be the same. But after this firmware I notice web pages take a while to load like a delay in the DNS response. Then it’s quick. Also happening on lots of devices and some TV app services timing out/erroring. I turned of IPv6 and not had a delay/lag since. So happily running on IPv4 at the moment. Just an idea.

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-17 21:49:13 - last edited 2023-07-17 22:37:58

  @dlfranks 

Thank you for this suggestion.  I checked my IPv6 setting and it is already turned off.  I'll turn it on/off and reboot to see if this has any effect.

 

BTW, I've also tried different DNS servers (e.g., Google, Cloudflare, and my ISP defaults) but none had any effect as well.

 

** Update **

 

After I post above, I toggled the IPv6 on and off, rebooting in between.  Right now, I have IPv6 turned on and the response time seems back to normal!  So, maybe it's not a matter of whether IPv6 is on or off, but toggling it seems to work!  Go figure...

 

Thank you once again for helping me.  I'll update this post if the response times starts lagging again.

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-19 03:15:27

  @benbeara 

 

Update:  July 18, 2023

 

Well, it's been 24 hours since the IPv6 toggle test so here is a quick update.  The noticeable improvement (i.e., no lag) has not deteriorated but it now appears that the connection is somewhat temperamental. Initial loads are fine, but it the connection seems to drop as if I was completely disconnected from the Internet.  In a few seconds, it would then appear to be working again... until another "stutter" occurs.  Here is where I've noticed this happening:

 

  1. Web pages - browsing seems fine, then a "page not found" error appears.  Simple F5 (refresh) instantly reloads the page without a problem.
  2. VPN client - my client's VPN keeps dropping (i.e., hiccup, stutter?) until I re-authenticate, at which point it appears fine again... until the next stutter.
  3. Outlook - while syncing my inboxes, it appears to make it through every account... except the last one!  Accessing this account via  browser is not a problem, so I can only attribute this to sudden drop in the connection.

 

So far, it's not catastrophic to my workflow (i.e., work) but it is starting to get annoying. I'm keeping my fingers crossed that this instability doesn't get worse... frown

 

TP-Link: is there any "simple" way to rollback the firmware? 

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-22 09:46:43

  @benbeara 

 

You should be able to roll back the firmware using a computer and the web interface login (tplinkdeco.net)   ( this is what i using to access the mesh at home ) 

 

Download the firmware file from your region support site , check hardware  version mine was V1. I downgraded my XE75 mesh from 1.2.6 to 1.2.2. without too much issue.

 

Regards

 

 

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-22 19:25:09

  @IntrovertSins 

 

Thanks for the feedback.  However, I cannot downgrade the firmware through the web interface as I get the following error message.  Hence, I was hoping there was another way revert to a previous version of the firmware.  sad

 

Another quick update.  The lag has returned and toggling the IPv6 does not improve it anymore. Maybe I'm getting used to the lag/stutter but this is really getting on my nerve.  So much so that I'm considering going back to my old Netgear router.

 

 

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-22 19:43:10

  @benbeara 

 

that’s funny , I was able to downgrade my 3 XE75 on 1.2.6 to the previous one on the uk support page for V1. 

Good luck either way. 

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-23 08:23:29

  @benbeara Experiencing the same disconnects / lag.  A reboot helps for a period, but then degrades.

 

I note CPU performance on the local web page http://tplinkdeco.net/ is pegged above 90% all the time, often at 99%.  I suspect there's a rogue process somewhere, but because TPLink don't allow any meaningful interfaces to the router (no ssh, no snmp, no anything useful) it's virtually impossible to find why.

 

z

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-24 01:47:47 - last edited 2023-07-26 01:05:49

  @benbeara 

 

Just a quick update for those who are following this thread and are experiencing similar issues as me.

 

Here are all the following things that I've tried so far:

 

  1. Toggle IPv6 settings and rebooting after each change - no noticeable benefit
  2. Rebooted Deco units individually and collectively on a regular basis - no noticeable benefit
  3. Tried to downgrade firmware to v1.1.11, (which previously very stable for me!) but system won't allow me (see screenshot above)

 

Another contributor stated that the CPU was running in excess of 90% (via Deco web interface) but my has been consistently fluctuating between 10% to 40%.

 

The lag is now back in full force and web pages take anywhere between 5-10 seconds to load, if at all.  On several occasions, the website doesn't even load as it just seems to "lose the connection."  This happens on various websites and even on my Android apps on my phone/tablet, such as SpeedTest.net, YouTube, etc.

 

I was hoping that this was a "me" problem and that there was an easy fix, but I'm beginning to think that this is a larger issue that some people have managed to tolerate it and/or do not participate in these community forums. 

 

frown

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-24 08:48:19

  @benbeara 

 

TP link are very slow with firmware updates and do feel there are problems with the firmware on these devices.

My current one with the XE75 is that the upload speeds seem to average half what they should be, No problems with Ethernet only wireless .

The other is the aggressive DFS radar strikes so using 80mhz wifi for stability. 

Have you tried downgrading to 1.2.2 to if that is allowed. 

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Re:Deco XE75 serious lag after firmware update to v1.2.6
2023-07-25 01:40:42 - last edited 2023-07-25 01:45:22

  @IntrovertSins 

 

Thanks again for your continued suggestions.

 

On the TP-Link support site for here in Canada, I only have access to three firmware versions available for Hardware version 1, specifically v1.1.8, v1.1.10, and v1.1.11 (see screenshot below).

 

I should add that I upgraded the firmware directly via the Deco app, not from the TP-Link website.  When I was on v1.1.11, the app stated that there was a newer firmware version available (i.e., v1.2.6) and hence my willingness to upgrade.

 

If you don't mind me asking, where did you download v1.1.22 from and are you in Canada/US?

 

Cheers.

 

 

 

 

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