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Racer
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Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

Hello,

I used to be able to Stream on Twitch with next to no frame drops on 6000kbps bitrate, however, since the 2nd March 2023 I now have over 65% dropped frames making my Stream Lag (kb/s is constantly bouncing up and down instead of being steady) with spikes & disconnects which is no good for viewers watching.

I had Virgin Media Gig1 Fibre Broadband installed back on the 14th Jan 2023 & enjoyed a stable Upload Speed between 50 - 52 Mbps. Now since 2nd March 2023, my speedtests show varying results each day between 24 - 39 Mbps.

My Connection / Upload speed feels inconsistent as my ping rises & lowers during gameplay.

It seems like there is noise or some interference occuring as the results are sporadic & often dip the longer a speed test goes on for, whereas before it would sit around 52Mbps solidly. The Download Speed seems unaffected but the Upload Speed is painfully different.

This is what I do for a living so it's affecting me greatly & I would like help solving this issue.

I have tried
-Restarting Router
-Changing Ethernet Cables
-Streaming using different Servers (London/France/Amsterdam)
-Streaming on another PC in House (To try to confirm that it's not a Hardware/Software/Network Card Issue)
-Streaming Downscale to 720p
-Streaming at 30fps

-If I stream at 3k Bitrate I have around 2-5% dropped frames but I still suffer infrequent spikes & disconnects.

This never used to happen so something has changed.

20230309 - Virgin Media - Internet Issues - OBS Studio Dropped Frames Numbers with Date (6k 1080p 60fps).jpg20230309 - Virgin Media - Internet Issues - Streamlabs Live Dropped Frames Numbers with Date (6k 1080p 60fps).jpg20230309 - Virgin Media - Internet Issues - Streamlabs Live Dropped Frames Numbers Detected (6k 1080p 60fps).jpg20230309 - Virgin Media - Internet Issues - Speedtest Thinkbroadband.jpg

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jpeg1
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

Just a few thoughts before someone with more experience with streaming comes along. 

You can check whether your suspicion of noise is correct by posting the upstream and downstream data from the Hub. 

You can check how busy your local network is by setting up a free BQM and posting a live link here. It will look terrible while you are streaming, but between those times you can see what you are sharing with. 

https://www.thinkbroadband.com/broadband/monitoring/quality

Ultimately if this is for your living you may need a more appropriate broadband connection than Virginmedia which is not intended or supported for that sort of use. 

 

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Racer
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

Hi jpeg1,

Thanks for your helpful response.

I have set up a BQM over the past 24 hours (See below for results)

Here are the statistics for the upstream & downstream data from the Hub.

Hopefully someone can understand this & help resolve this issue.

Virgin Media Gig1 Fibre Broadband BQM TestVirgin Media Gig1 Fibre Broadband BQM TestSpeed Test ResultsSpeed Test Results

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
11790000002.236QAM 2566
21390000002.936QAM 2561
31470000002.636QAM 2562
41550000002.336QAM 2563
51630000002.136QAM 2564
6171000000236QAM 2565
71870000002.536QAM 2567
8195000000336QAM 2568
92030000003.336QAM 2569
102110000003.837QAM 25610
112190000003.837QAM 25611
122270000003.936QAM 25612
132350000003.937QAM 25613
142430000003.936QAM 25614
152510000003.737QAM 25615
162590000003.637QAM 25616
172670000003.437QAM 25617
182750000003.336QAM 25618
192830000003.237QAM 25619
202910000003.236QAM 25620
21299000000337QAM 25621
223070000002.937QAM 25622
233150000002.937QAM 25623
243230000002.837QAM 25624
253310000002.536QAM 25625
263390000002.336QAM 25626
273470000002.336QAM 25627
283550000002.336QAM 25628
293630000002.436QAM 25629
303710000002.537QAM 25630
313790000002.737QAM 25631

 

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked36140
2Locked3610
3Locked36140
4Locked3650
5Locked36140
6Locked3610
7Locked3620
8Locked3600
9Locked3630
10Locked3710
11Locked3710
12Locked36160
13Locked3710
14Locked361610
15Locked3700
16Locked37252
17Locked3710
18Locked3620
19Locked3710
20Locked3610
21Locked3700
22Locked3710
23Locked3710
24Locked3730
25Locked3640
26Locked3690
27Locked3640
28Locked36100
29Locked36150
30Locked37200
31Locked37120

 

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
06030000034.85120QAM 641
15370000034.85120QAM 642
24620000034.85120QAM 643
33940000034.85120QAM 644
432600000355120QAM 645
52360000035.55120QAM 646

 

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0ATDMA0010
1ATDMA0002
2ATDMA00140
3ATDMA00251
4ATDMA00541
5ATDMA00811

 

Network Log

Time Priority Description
10-03-2023 12:07:38criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 11:08:03warningDynamic Range Window violation
10-03-2023 11:08:03warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 11:03:44warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 11:03:44warningDynamic Range Window violation
10-03-2023 08:16:40criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 07:38:38errorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 01:13:00criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 00:59:07criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 00:50:09criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 23:16:17warningDynamic Range Window violation
09-03-2023 23:16:17warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 22:50:20critical16 consecutive T3 timeouts while trying to range on upstream channel 5;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 22:50:20criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 22:44:08criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 22:44:05criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 22:10:11warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 22:10:11warningDynamic Range Window violation
09-03-2023 22:00:52warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 22:00:52warningDynamic Range Window violation
09-03-2023 21:02:58criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 20:17:02warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 20:17:02warningDynamic Range Window violation
09-03-2023 19:20:48criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 16:37:23warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 16:37:23warningDynamic Range Window violation
09-03-2023 07:57:53criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 07:50:01criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 03:55:03criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-03-2023 20:23:47warningDynamic Range Window violation
08-03-2023 20:23:46warningRNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
08-03-2023 04:17:20criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

 

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Zach_R
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

Hi @Racer,

Thank you for your posts and welcome to our community forums. We're here to help.

I'm very sorry to hear that you appear to be facing some connection quality issues recently. Are these ongoing today? If they are, are you able to provide a link to your live BQM? That way we can see the connection quality in real-time.

Thanks,
 



Zach - Forum Team


New around here? To find out more about the Community check out our Getting Started guide


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legacy1
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

Low level 1-3% packet loss likely due to a SNR issue in the area
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jpeg1
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

All those T3 errors show something seriously wrong. 

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Client62
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

Check for a local fault on : 0800 561 0061

The reason for saying this is this connection has six "QAM 64" "DOCSIS 3.0" channels connected that equates to ( 6 x 27Mb/s ) = 162Mb/s of upstream for the Hub to use for upstream transmission.  

Yet there are speed test shared in the thread showing repeated runs having failed to exceed 12Mb/s on the upstream.

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legacy1
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

What I find different about this case vs others is you can get  equal T# across all channels but in this case they are failing unequal.

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jpeg1
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable

Yes. In a slope inversely proportional to frequency. 

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jem101
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Re: Upload Speed has Dropped making my Stream to Twitch Laggy & Unstable


@jpeg1 wrote:

Yes. In a slope inversely proportional to frequency. 


Yep, because I'm sure you are aware of the relationship between attenuation against frequency on a cable of fixed properties!

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