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scallybert
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Wildly Variable Speeds

Over the last two weeks (or so), I've noticed that  MSTeams Video calls would periodically 'pause', with the audio cutting out for a few seconds each time.

Running various broadband speed tests, I see the download speed varying wildly. While often above the (nominal) 200Mb/s, it would sometimes be as low as 20Mb/s, other times around 60Mb/s all of these in tests run pretty much 'back to back'.

Similar on upload (max 20Mb/s) - but that might do down to near-zero.

I seem to see this with various devices, some on wired connections.

I don't *think* it's a device here bandwidth hogging.

TBH, I probably wouldn't have noticed except for the MS Teams glitches - which are a pain.

It also seems to happen mostly during 'office hours'.

Any thoughts ?

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Adduxi
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Message 2 of 11
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Re: Wildly Variable Speeds

Could be over utilisation as more people are now back to working from home.

However, try checking with Area faults on 0800 561 0061 or if you have a VM landline 150 first.

Also setup a BQM to record and monitor your incoming circuit  www.thinkbroadband.com/ping  Once done we can comment on that.

Post your power levels, Pre and PostRS errors and Network log as well. Do NOT use screenshots, just copy and paste the information into several posts.

 

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Message 3 of 11
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Re: Wildly Variable Speeds

3.0 Downstream channels

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

81947500005.80000338.983261QAM2568
61787500005.59999840.366287QAM2566
71867500005.80000338.605377QAM2567
92027500005.59999838.605377QAM2569
102107500005.00000038.605377QAM25610
112187500004.50000037.636276QAM25611
122267500004.40000237.355988QAM25612
132347500004.59999837.355988QAM25613
142427500004.59999837.355988QAM25614
152507500003.90000236.609653QAM25615
162587500003.70000137.355988QAM25616
172667500003.79999936.609653QAM25617
182747500004.30000337.355988QAM25618
192827500004.59999837.355988QAM25619
202907500004.80000336.609653QAM25620
212987500004.40000237.355988QAM25621
223067500004.00000036.609653QAM25622
233147500003.79999937.355988QAM25623
243227500003.59999836.609653QAM25624
253307500003.09999836.386890QAM25625
263387500002.59999836.386890QAM25626
273467500002.40000236.609653QAM25627
283547500002.29999936.386890QAM25628
293627500002.40000235.779911QAM25629
303707500001.90000236.386890QAM25630
313787500001.09999835.779911QAM25631
323867500000.70000136.609653QAM25632
343947500001.00000036.609653QAM25634
354027500001.09999836.609653QAM25635
364107500001.00000036.609653QAM25636
374187500000.59999836.386890QAM25637
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scallybert
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Re: Wildly Variable Speeds

3.0 Downstream channels

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

8Locked38.98326100
6Locked40.36628700
7Locked38.60537700
9Locked38.60537700
10Locked38.60537700
11Locked37.63627610
12Locked37.35598810
13Locked37.35598800
14Locked37.35598800
15Locked36.60965310
16Locked37.35598810
17Locked36.60965300
18Locked37.35598810
19Locked37.35598800
20Locked36.60965330
21Locked37.35598800
22Locked36.60965310
23Locked37.35598800
24Locked36.60965310
25Locked36.38689030
26Locked36.38689020
27Locked36.60965330
28Locked36.38689020
29Locked35.77991190
30Locked36.38689030
31Locked35.77991180
32Locked36.60965340
34Locked36.60965320
35Locked36.60965300
36Locked36.60965330
37Locked36.38689040
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scallybert
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Message 5 of 11
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Re: Wildly Variable Speeds

3.0 Upstream channels

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

12580000046.2705995120 KSym/sec64QAM4
24620000045.5205995120 KSym/sec64QAM1
33940000045.0205995120 KSym/sec64QAM2
43260000045.0205995120 KSym/sec64QAM3



3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1US_TYPE_STDMA00140
2US_TYPE_STDMA0010
3US_TYPE_STDMA0010
4US_TYPE_STDMA00210

 

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scallybert
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Message 6 of 11
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Re: Wildly Variable Speeds

> Also setup a BQM to record and monitor your incoming circuit  www.thinkbroadband.com/ping  Once done we can comment on that.

I think I've set that up. I've not seen results, yet.

> Post your power levels, Pre and PostRS errors and Network log as well. Do NOT use screenshots, just copy and paste the information into several posts.

Posted. Nothing in Network log.

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Adduxi
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Message 7 of 11
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Re: Wildly Variable Speeds

Stats look okay apart from the number of T3's, but they could be historical?  When did you last reboot the Hub?

Also post the shared link of your BQM so we can see the state of your circuit.

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jpeg1
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Message 8 of 11
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Re: Wildly Variable Speeds

You said in your OP,

"I seem to see this with various devices, some on wired connections"

WiFi connections will by their very nature vary considerably in speed and quality, due to a number of local factors and also because the VM Hubs have very basic WiFi capability.   The speeds are only guaranteed for ethernet wired connections.

To establish where the speed loss is happening, you need to do all tests on a single wired device with all other apps and devices disconnected. This will show if it's an external or internal problem.  What speeds are you getting this way?

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Gareth_L
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Message 9 of 11
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Re: Wildly Variable Speeds

Hello scallybert

Have you been able to follow the advice given above

Also just wanted to check how things are now 

Gareth_L

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scallybert
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Message 10 of 11
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Re: Wildly Variable Speeds

Hi Gareth_L,

Not entirely...

One problem I have is that the directly connected PC that I used for BQM is often used with a VPN - which (I guess) interferes with BQM ?

It seemed there was a possibility of having BQM doing it testing 'on the router', but the instructions were different to the router menu options.

Performance over the last few days has been far worse, with iPlayer, etc regularly buffering or worse.

What *seems* to happen, is that the download speed is fairly consistently good (>200Mb), but occasionally down to 60Mb; but the upload speed is a mess. While it's often >20Mb, it will often be about 6Mb, or zero.

I assume the upload issues impact the downloading protocols.

https://care.virginmedia.com/care/check-services gives:

///

Looks like there are issues in your postcode affecting your services

There's a broadband issue in your area and our engineers are on the case to fix things. Check back here at any time for updates.

///

 but there's no sign of any progress.

 

 

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