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Very, very slow VPN at busy times

Ebmocnud
Tuning in

I have  350mbps connection and speeds are generally good at most times. I have been using Nordvpn for a while. but for the last couple of months the vpn connection during office hours is dire and runs at about 10% of the norm and then returns in the evening.

Nordvpn has checked out all my settings and can find nothing wrong, so I can only assume that VM are somehow throttling my vpn connection.

Unfortunately it is impossible to get hold of a human at VM to talk this through and check my system and connections - anyone have a similar problem or any ideas? 

3 ACCEPTED SOLUTIONS

Accepted Solutions

JitteryPinger
Super solver

Hub Stats:
Open http://192.168.0.1/ or http://192.168.100.1/ (if you have your Hub in Modem mode) in your browser

For Hubs 2 & 3 - DO NOT LOG IN, just click “Check Router Status”

For Hub 4 - When the page appears LOG IN then click on: Advanced Settings > Tools > Network Status.

Please copy and paste the contents of the Downstream, Upstream, Configuration and Network Log tabs in replies here.

If this is your first time you may have to do first setup of hub password.

The Giggitty 1

See where this Helpful Answer was posted

Upload is pretty much most important and its your data/requests going via it that make downloading happen, for many years its not be considered important but in the last 5 years I've been somewhat advocating its importance as more and more people start streaming and sharing online.

Download now has become so much of a known headline and seller in the market that is more focused upon, everybody seems to be obsessed with the Gigabit (1000mb) headline these days that they overlook the meagre upload speeds supplied in some cases (such as worst case scenario which is Virgin's own Gig1 which currently only capable of 50mbps upload , unless obviously in area with issues like yours)

Unfortunately operators like Virgin do currently have specification limitations holding them back as cable broadband while great for delivering  high speeds to customers is not currently very adapted to 'taking' speeds from customers.

The reason for this is that the ratio of download to upload bandwidth on Virgin kits being very lopsided towards delivery of services (download) there really isn't much upload bandwidth to share amongst the local area loops connecting customers properties.

This is isolated to DOCSIS (Cable Networks) only, most other technologies in use to connect customers to the internet is much better managed and designed to lower the ration of customers to bandwidth and also physically limited to accept fixed numbers of connections rather than the rampant splitting that can and does occur across many parts of Virgin's national network.

Recently I run some number to work out how many customer it takes to saturate the available bandwidth on a localized loop of a typical Virgin network setup and this gave me an estimate that it only takes a very small proportion of a an area to bring the network to a virtual halt.

It takes between 130-180 kids learning from home to saturate the upstream bandwidth bu using a google classroom session each, this don't include the parents working from home of video conferences and remote connecting to PC's at the office. this was based on a Virgin network node that served 768 properties of which only 50% had service had service with Virgin and only 65% of them properties had 1 child at home.

As for the blame, you can of course blame Virgin but you won't get much help from them, if you wanted to look at other ISP's then they would let you go based on speed issues without any penalties (If that was a route you would consider), currently the best hope for services resuming some sort of half decent performance is just waiting it out.

I recently dropped one of my Virgin connections in favor of a slower DSL service as the upload was becoming unstable and affecting some applications in my home office, it wasn't anywhere near as bad as your own problems but enough to affect some latency sensitive operations, I went from having 350Mbps download and 36mbps upload to 50mbps down and 19mbps up and I can't say I've noticed losing the bandwidth on download and uploading now is stable like never before, I also share the connection with 2 other adults who stream Sky/BT sports constantly of a night.

As much as a read this is I hope it gives you a good idea of what broadband is about and what is important and not.

The Giggitty 1

See where this Helpful Answer was posted

I would make sure that you don't focus on speed of VPN to much, they're all running a bit 💩 at the moment, I'm just doing some testing on PIA with London and its not bad but its not great,

However speaking to someone behind one of my other Virgin connections the other day did show me a significant drop in bandwidth over VPN which could be bottle-necking at handover from Virgin to data centers.

The Giggitty 1

See where this Helpful Answer was posted

21 REPLIES 21

JitteryPinger
Super solver

Hub Stats:
Open http://192.168.0.1/ or http://192.168.100.1/ (if you have your Hub in Modem mode) in your browser

For Hubs 2 & 3 - DO NOT LOG IN, just click “Check Router Status”

For Hub 4 - When the page appears LOG IN then click on: Advanced Settings > Tools > Network Status.

Please copy and paste the contents of the Downstream, Upstream, Configuration and Network Log tabs in replies here.

If this is your first time you may have to do first setup of hub password.

The Giggitty 1

Hi Matt, thanks for the reply and hope this makes some sense to you!

Downstream bonded channels

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

17230000007.840256 qam40
25390000006.838256 qam17
35470000006.938256 qam18
45550000006.838256 qam19
55630000006.638256 qam20
65710000006.638256 qam21
75790000006.538256 qam22
85870000006.538256 qam23
95950000006.538256 qam24
106030000006.938256 qam25
11611000000738256 qam26
126190000006.938256 qam27
136270000006.538256 qam28
146350000006.438256 qam29
156430000006.538256 qam30
166510000006.638256 qam31
17659000000738256 qam32
18667000000737256 qam33
19675000000738256 qam34
20683000000738256 qam35
216910000007.538256 qam36
226990000007.838256 qam37
23707000000840256 qam38
24715000000838256 qam39


Downstream bonded channels

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

1Locked40.317981531
2Locked38.6619012205
3Locked38.9553742246
4Locked38.9534682082
5Locked38.6531562003
6Locked38.6510942243
7Locked38.9465552241
8Locked38.9387922116
9Locked38.9321932012
10Locked38.9252992158
11Locked38.9256722098
12Locked38.9257131934
13Locked38.6310281994
14Locked38.6329211998
15Locked38.6263731779
16Locked38.9298021758
17Locked38.9297101712
18Locked37.6287751703
19Locked38.6214341958
20Locked38.9190561411
21Locked38.6141711634
22Locked38.9131441709
23Locked40.398771969
24Locked38.960611370

Upstream bonded channels

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

13940018134.7512064 qam6
24620014035.3512064 qam5
33260014934.3512064 qam7
42580000033.8512064 qam8

 

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
cmreg-vmdg505-bbt062-b.cm


Primary Downstream Service Flow

SFID229738
Max Traffic Rate402500089
Max Traffic Burst42600
Min Traffic Rate0


Primary Upstream Service Flow

SFID229737
Max Traffic Rate38500089
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling TypeBestEffort


Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0010
2ATDMA0000
3ATDMA0010
4ATDMA0000

 

rest to follow.....

Sorry Matt it won't let me load it unless with the HTML??

Network Log
Time Priority Description
23/02/2021 17:52:16 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 16:50:36 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 16:50:36 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 13:03:8 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 13:03:8 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 12:16:41 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 12:16:41 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 12:11:26 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 12:11:25 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 12:11:25 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
23/02/2021 12:08:45 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 17:44:38 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 17:13:33 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 17:13:22 Warning! LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 17:10:54 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 17:10:40 Warning! LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 17:08:11 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 17:06:31 Warning! LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/02/2021 16:50:7 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/02/2021 22:21:52 Error DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

OK those look fine.

Next can you try setting up a BQM - Broadband Quality Monitor

To do this first register here https://www.thinkbroadband.com/register , Once register go here https://www.thinkbroadband.com/broadband/monitoring/quality

Click on Create a new monitor, Enter a name for your Graph then Enter your IP address (this should already have detected your IP for you)

Select Cable Broadband as Type, Then enter postcode (optional), Allow in trends (optional)

Then Create

Then find your BQM here https://www.thinkbroadband.com/broadband/monitoring/quality/list

Click on Share Live Graph, then right click in the direct link box, click select all, right click again and copy into a reply.

 

 

The Giggitty 1

Thanks Matt, good to chat with someone who appears to know what they are doing for a change!

Hope this is what you want

https://www.thinkbroadband.com/broadband/monitoring/quality/share/061dcf758dc112279d9eaa022d10dbdea98e9548

Thanks, 
Roger

Nicely done Roger,

Well let this populate overnight and take another look tomorrow.

The Giggitty 1

Thanks for your help so far Matt - non VPN speed now at 353mbps and VPN speed 134mbps.....that will be very different at about 9.30 tomorrow morning!

Roger

Good morning Matt,

So as normal the speeds this morning have dropped off:

7.00am 284mbps

8.00am 248mbps

9.00am 38mbps

9.30am 39mbps

This is typical of every weekday and can't be settings on my PC surely?

Roger

This is affecting both the VPN and without VPN right?

The Giggitty 1