DSL-AC68U upload speed cut in half with firmware 3.0.0.4.386 (DSL v1.0.5.1.)

[Václav Vokolek]

Hello Gentlemen,

I have noticed after update from 3.0.0.4.384_81981 (DSL driver 1.0.4.9 ) to 3.0.0.4.386 (DSL 1.0.5.1.) the upload speed is cut in half. I have  T-Mobile 100/10 VDSL2.
I tried version 386_38287, 386_38832, 386_39648 always with reset and clean settings.
There is faster downstream data rate achieve 100Mbps but upload speed is only 5Mbps although upstream data rate is 10Mbps. I did measuring via ASUSWRT, speedtest.net and fast.com.
I also tried to turning off QOS, but nothing change.
Upload is cut and constant at 5Mbps.

Somebody with same issue?

Any help is highly appreciated.

Thanks / Václav

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   386.png
   

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   speedtest-384.png
   

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[UK Sentinel]

Welcome, your DSL Sync rate for Upstream according to your stats is just over 10Mbps for both firmware’s and a speed test of 9 Mbps is good,

A speed test of 5Mbps is not so good as you have said.

Under Modulance DSL- you have both G.vectoring and G.inp enabled, is that normal for your connection?

Is speed test via wired or wireless client as maybe a wifi issue ?

 

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[Václav Vokolek]

Hi,

Yes it is normal for my connection that both G.Vectoring, G.INP are enabled. When one or other settings is disabled the data rate and download is lower (app. 50Mb/s).

The speed test is via wired computer.

I did roll back to old version firmware 3.0.0.4.384_81981 because of half upstream.

Thanks

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[UK Sentinel]

Was AiProtection On ?

Did you try Version 3.0.0.4.386_39648  which is the latest firmware ? if you have tried the latest firmware then send a feedback form to ASUS so they can look to see if there are faults with new firmware

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[Václav Vokolek]

Changing AiProtection has no effect. Yes a tried Version 3.0.0.4.386_39648 and hard reset and manual settings.

I did some testing yesterday with 386_39648. If I switch off G.vector then upload is 9.62Mb/s but download is only 55Mb/s. I have to also switch off SRA to achieve at least 75.7Mb/s but then path mode is interleaved instead of fast.

 

 

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Attachments:

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   386-Speedtest-G.vector-and-SRA-off.png
   

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   386-nastaveni-G.vector-and-SRA-off.png
   

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   386-DSL-Log-G.vector-and-SRA-off.png
   

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[UK Sentinel]

Interesting, so if you just use 3.0.0.4.384_81981  then you achieve good download and upload sync rate (speeds) ?

I will drop ASUS an email and ask them if there are any known issues with the latest firmware

For you – 3.0.0.4.384_81981 (DSL driver 1.0.4.9 ) sound the best option for now

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[UK Sentinel]

Also if you are a little technical, have a look at a developer called @Gnuton whom combines ASUSWRT-Merlin firmware with Source code from the DSL-AC68U to give extra functionality for the DSL-AC68U etc.

https://uktechhub.com/forums/topic/who-is-gnuton-and-what-is-he-about/

https://gnuton.github.io/asuswrt-merlin.ng/

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[Václav Vokolek]

Hi,

thanks for the support. Yes, I achieve good download and upload with 3.0.0.4.384_8198.

I used ASUSWRT-Merlin DSL firmware by Gnuton before. No more update today. The last one is from June.

Have a nice day and stay safe

BR / Václav

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