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Fell19865
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Performance degradation in the evenings

Hi,

I'm paying for the 100Mbps service. During the day, speed tests consistently show download speeds of ~100Mbps and upload speeds of ~10Mbps.

However, between about 6pm and 11pm, the download speed is consistently worse at about 10Mbps (although the upload speed remains at 10Mbps).

I'm using the SuperHub3 in Modem mode with a separate router connected via ethernet. The speed tests are done via ethernet, not via WIFI. I have tried a factory reset of the SuperHub as well as rebooting it - this did not help.

BQM Link

I've set up a BQM which seems to be showing latency issues during the evening. https://www.thinkbroadband.com/broadband/monitoring/quality/share/7f36e364d6175528f267d3e272dc28d3c6...  

I'll share the router stats in posts below.

I would be grateful for any help since the slow speeds are causing issues using streaming services in the evening.

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Fell19865
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Re: Performance degradation in the evenings

Router Status - Downstream

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

13310000003.740256 qam25
22670000004.540256 qam17
32750000004.540256 qam18
4283000000440256 qam19
52910000003.438256 qam20
62990000002.738256 qam21
7307000000440256 qam22
83150000003.940256 qam23
93230000003.540256 qam24
103710000002.740256 qam26
113790000002.940256 qam27
123870000002.940256 qam28
133950000003.240256 qam29
14403000000340256 qam30
154110000003.240256 qam31
164190000003.240256 qam32
174270000003.240256 qam33
18435000000340256 qam34
194430000002.940256 qam35
204510000002.740256 qam36
214590000002.540256 qam37
224670000002.540256 qam38
23475000000240256 qam39
244830000001.740256 qam40



Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked40.34225
2Locked40.34124
3Locked40.33815
4Locked40.33139
5Locked38.94127
6Locked38.66336
7Locked40.34938
8Locked40.36219
9Locked40.34225
10Locked40.32624
11Locked40.34310
12Locked40.33419
13Locked40.311915
14Locked40.33322
15Locked40.34212
16Locked40.33717
17Locked40.31721
18Locked40.32412
19Locked40.32120
20Locked40.32917
21Locked40.92627
22Locked40.3390
23Locked40.314410
24Locked40.92914

 

Router Status - Upstream

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

13260000241.3512064 qam5
23939999641.8512064 qam4
34620001242.8512064 qam3
45370006145.8512064 qam2



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000



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Fell19865
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Re: Performance degradation in the evenings

Router Status - Network Log

Network Log

Time

Priority

Description

01/12/2020 11:47:19

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

30/11/2020 18:33:27

notice

LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

01/01/1970 00:01:38

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

30/11/2020 12:20:13

notice

DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt057-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

30/11/2020 12:20:13

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

28/11/2020 01:25:22

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

27/11/2020 10:17:52

notice

DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt057-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

27/11/2020 10:17:52

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

25/11/2020 12:02:54

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

24/11/2020 18:58:14

Warning!

RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

24/11/2020 17:52:5

notice

LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

23/11/2020 08:35:41

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

23/11/2020 01:22:41

notice

DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt057-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

23/11/2020 01:22:41

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

21/11/2020 15:18:57

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

20/11/2020 10:31:14

Warning!

Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

20/11/2020 10:31:9

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

20/11/2020 10:31:9

Warning!

RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

20/11/2020 10:31:9

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

20/11/2020 10:30:49

Warning!

RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

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MikeRobbo
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Message 4 of 10
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Re: Performance degradation in the evenings

It sounds like you are suffering from utilisation issues during the evenings.

Leave your BQM running so that it shows 24 hours worth of pings and we will be able to see a better overall picture.


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BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.
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MikeRobbo
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Re: Performance degradation in the evenings

Can you do a speed test at Lunch time, tea time and about 20:00 using the same device using the following protocol ...

What speeds do you get at >> speedtest.net << with a direct connection using a Cat 5E or better ethernet cable between the Hub in Router Mode and a 1Gbs capable Pc/Mac/Chromebook and no other devices connected ?


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BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.
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Fell19865
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Re: Performance degradation in the evenings

Hi Mike,

Thanks for your reply. I don't have a PC that I can connect to the router via ethernet, however the router is connected to the superhub via ethernet, and has a speed test feature which uses speedtest.net. The following 2 screenshots show various speed tests done yesterday afternoon and evening, and this morning.

1PM Yesterday: 109.5Mbps

6PM Yesterday: 28.2Mbps

9PM Yesterday: 8.8Mbps

10AM This Morning: 107.9Mbps

Screenshot_20201202-103646 (2).png

Screenshot_20201202-103721 (1).png

 

I will leave the current BQM running. I had one running last week for a few days, which showed the same spikes during the evening time.

Thanks.

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MikeRobbo
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Re: Performance degradation in the evenings

When you connected the Router to the Hub did you set the Router up to be in DHCP mode ?

 


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BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.
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Fell19865
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Re: Performance degradation in the evenings

The router (TP Link Deco M5 Mesh System) was setup using the standard configuration. It's acting as a DHCP server. 

I also experienced the exact same issue using a TP Link Archer A7 AC1750 router instead of the Mesh system.

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MikeRobbo
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Re: Performance degradation in the evenings

It certainly points to evening over utilisation.

You might be as well contacting VM and report the "Performance degradation in the evenings".

You can either call in (08:00 is the best time) or wait on here for a few days (6 to 7 days average) until one of the VM Forum Staff comes along.

If you wait on here Do Not bump the thread it will put it further down the VM 'to do list'.


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BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.
Andrew-G
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Re: Performance degradation in the evenings

@Fell19865  The BQM is pretty conclusive that you are suffering problems because your local network is subject to over-utilisation.  Reporting it is unlikely to get it fixed, I'm afraid, because fixing over-utilisation is usually a complicated job that needs careful analysis and planning before anybody thinks about lifting a screwdriver.    

Adapted from my stock response: The BQM shows a typical over-utilisation pattern - you see how it's very poor during normal waking hours, and then peachy from about half past midnight to 9 am? Shows that the network and your hub are working perfectly when there isn't too much traffic. You can choose to believe whether this is Covid related, or whether VM simply sell contracts until (and indeed after) the local network is at capacity, but the outcome is the same for now.

Nothing you can do to improve matters. In some areas VM do indeed undertake work to rejig the local networks to balance loads and eliminate over-utilisation. But sometimes that's either not possible, or judged uneconomic if there's a need to spend money on more equipment. And sadly VM won't ever admit the truth, so there may be a fault reference and a "fix date", but there's no way of knowing if that fix date is actually backed by an actual plan of action and programme of works. Quite often it seems not, and as the fix date approaches it is simply moved a month or two ahead.

Of late we've had a further lockdown and now LockdownLite, plus the start of the 2020 game and console release cycle, both of which have driven traffic up hugely.  If the over-utilisation started suddenly in the past week or two, there's a hope that it will fade away when those influences decline, and my advice is to wait and see for a month or two, even if that's really inconvenient.

There is a further glimmer of hope, that as and when your area is upgraded to DOCSIS 3.1, and sufficient customers are using the Hub 4, then that ought to improve matters, but this could be many months, even a year or two hence. Simply having a Hub 4 on its own won't improve matters, and although VM aren't saying so, I suspect that even after D3.1 is active, a significant proportion of customers on an over-utilised segment would have to be using the Hub 4 before the benefits start to appear.

Your options:

1) Sit it out, and hope that either VM do carry out improvement works, or that they get D3.1 live and sufficient Hub 4's on the network.  The D3.1 benefits will work for some instances of over-utilisation but not for all.

2) Get yourself a new ISP. If you want to do this, check if you're liable for any VM early termination fees because you're in a fixed term contract, and make sure you speak to a competent ISP (AAISP, uno, Aquiss, IDNet, CIX, Zen Internet) to establish your expected speed and whether there's any existing contention (over-utilisation) issues on the Openreach network around you.  Failure to do the first could land you with a big bill, failure to do the second could mean you jump ship and find the situation is no better, but your broadband is slower.  If you're in a fixed term contract you'll probably have to use the VM complaints process (and arbitration at CISAS if need be) to try and be released from contract without penalty.


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