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Congestion? Speeds drop at 7pm

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Community Team - TT Staff

Hi scott,

 

I'm really sorry for the delay in getting back to you. Our Network Engineer came back to me yesterday morning to advise that they have completed their investigation and can't find any issue that would cause the slow speeds that you're experiencing. They have asked if you can confirm if you are experiencing the slow speeds on more than one device? Is it also still happening when connected wired?

 

Thanks

 

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Team Player
It happens on all devices wired and wireless. I even tried making sure only one wired connection at a time. I mean it's not always bad speeds, just very bad at peak times. I have seen numerous posts on other forums about this exact problem and in the end it all boiled down to congestion occuring at the SVLAN at the exchange. It's very very clear from my test results and timing that it is congestion based. So although the network engineer may not of found any problem between me and the cabinet, did they check for problems at the actual exchange? Can I be moved to a different SVLAN?

In this post from plusnet https://community.plus.net/t5/Fibre-Broadband/Slow-Broadband-in-the-evenings/td-p/1498256/page/4 , a user had the exact same problem. The engineers came back and said that there was no congestion on the SVLAN and after further pushing from the mod team, they eventually admitted that there was in fact a SVLAN running hot and causing problems.

I mean the problem is clearly there, we can't deny it. Please do your best to get them to investigate the SVLAN at the exchange and if possible put me on one that is not so hot and the issue will be solved.

If you do have some automatic congestion monitoring software running, then it must be pretty bad to be honest, maybe purposfully so to avoid paying for more hardware and it's just not acceptable to keep fobbing it off and wasting money on unneeded engineer visits and new routers.
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Community Team - TT Staff

Hi scott,

 

Thanks for confirming. I've passed your comments back to our Network Team now and have asked them to take another look. I'll post back here as soon as I know more.

 

Thanks

 

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Community Team - TT Staff

Hi scott,

 

Our Network Team have made a change and have asked if you could monitor over the weekend please and let us know if there is any improvement.

 

Thanks

 

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Team Player

Ok will do,

Here is first speed test:

8:20PM Friday:

 

1591384502688192855

 

Then I did another literally 4 minutes later and I got:

 

1591384743165825055

 

Worst it's been so far 😞 It's so weird that it can change that quickly, I did the test with nothing but one ethernet connected and made sure my PC had no other connections open. The same result happens with the TalkTalk speed test. When the test is running I can actually see the speed jumping about, it's not consistent.

 

I will do another later on after peak time.

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Team Player

This is 11AM:

 

1591437546189976955

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Team Player

And this is 22:30 ish

 

1591479422729423055

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Community Team - TT Staff

Hi scott88c,

 

Thanks for the update, how has it been over the last 4 days, any change or just the same?

Chris

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Team Player

Bad to be honest, worst than before. Normally it would be after 8PM that the speeds would drop. Now it's like 4PM, whatever the engineers did, made it worse I think.

 

1591800805623099955

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Team Player

Here is another test at 2:30PM and the speed is at its max and good. If I have time I will get another at peak time to show the drop again. But even on this speed test, the single threaded download speed is still half and that should show network congestion.

 

1591882561408922655

 

I did another at 5:30PM:

 

1591893245672863755

 

It will probably get worse from here on until about midnight.

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Team Player

I'm up at 5AM for work, so was perfect time to prove to you about the single threaded congestion issue. Here is the result for 5AM, it's pretty much perfect and congestion free:

 

1591934000488150955

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Community Team - TT Staff

Hi scott,

 

I'm sorry for the delay. I've just advised our Network Engineer about this now and will post back once I know more on this.

 

Thanks

 

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Team Player
Thank you, I have been doing random tests today to give a more accurate picture, especially as it's a Friday when congestion should be fairly high. Will post them all later tonight.
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Team Player

12:30PM: (good)

 

1591961186510842755

 

18:30PM: (good)

 

1591982577890147355

 

19:00PM (starting to slow on single threaded download)

 

1591984884793842655

 

19:45PM (single threaded download is now halved and multi threaded is also starting to slow)

 

1591985688867372955

 

20:40PM (all results are terrible, even the upload speed)

 

1591990610824380255

 

22:00PM (all results are terrible)

 

1591995416881997055

 

23:10PM (single threaded is still bad but rising, multi threaded speed is back to normal)

 

1591999918285853055

 

12:20AM (Things are back to normal again)

 

1592003899877738855

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Community Team - TT Staff

Hi scott,

 

Thanks for the additional info. I've not heard anymore since my last post so I've requested another update now.

 

Thanks

 

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Community Team - TT Staff

Hi scott,

 

They have advised me that they are still investigating this, apologies for the delay.

 

Thanks

 

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Team Player

Hi, is there any update for this? Thanks

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Conversation Starter

Ferguson I understand what your saying, but talk talk guarantee speeds so if they can’t deliver, where does that leave the customer, and the customers rights.

Donny
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Insightful One
It depends on your contract start/renewal date. Details can be found here:

https://community.talktalk.co.uk/t5/Articles/Broadband-Speed-Code-of-Conduct/ta-p/2204642
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Conversation Starter

Thx bro, i’ll Have a read.

Donny