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Slow Speeds on 200mb line

Hey everyone

I got Vivid 200 installed 3 weeks or so ago. The first thing I did was a speedtest, and I got 118mb down and 12mb up.

Since then, I've noticed my speed have been on the decline, sometimes drastically... here are a sample of results.

DateTimeDownloadUpload
27/06/201911:21am11812
27/06/20191:51pm8011
27/06/20198:20pm9611
27/06/20198:21pm9212
27/06/20199:19pm9511
29/06/201912:34pm10111
04/07/20199:17am5620
04/07/201910:50am3920
11/07/20195:29pm1910
11/07/20195:34pm182
11/07/20198:19pm647
11/07/201911:17pm1714
13/07/20198:36pm231

This is the same when I'm stood right next to the hub (my WiFi signal is consistently strong). It's the same on 2.4Ghz, 5Ghz, or both.

I've tried restarting numerous times, including a couple of times for factory reset. Right now, I'm getting 32mb down and 9mb up.

Here's some router stats. Any suggestions?

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

12507500008.340256 qam15
217075000011.140256 qam5
317875000010.640256 qam6
418675000010.640256 qam7
519475000010.440256 qam8
62027500009.940256 qam9
72107500009.840256 qam10
82187500009.140256 qam11
9226750000940256 qam12
102347500008.640256 qam13
112427500008.640256 qam14
12258750000840256 qam16
132667500007.640256 qam17
142747500007.540256 qam18
152827500007.540256 qam19
162907500007.840256 qam20
172987500007.940256 qam21
18306750000840256 qam22
19314750000840256 qam23
203227500007.640256 qam24
214027500006.840256 qam25
224107500006.940256 qam26
234187500006.540256 qam27
244267500006.540256 qam28



Downstream bonded channels

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

1Locked40.31060
2Locked40.3620
3Locked40.3510
4Locked40.3690
5Locked40.9620
6Locked40.3560
7Locked40.9580
8Locked40.9910
9Locked40.3840
10Locked40.3860
11Locked40.9900
12Locked40.91060
13Locked40.91170
14Locked40.31060
15Locked40.91470
16Locked40.91470
17Locked40.31460
18Locked40.31140
19Locked40.31270
20Locked40.91850
21Locked40.93630
22Locked40.34070
23Locked40.93540
24Locked40.93840
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Re: Slow Speeds on 200mb line

Upstream bonded channels Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID 1 39399949 3.75 5120 64 qam 10 2 25799969 3.675 5120 64 qam 12 3 32600000 3.75 5120 64 qam 11 4 46200004 3.75 5120 64 qam 9 Upstream bonded channels Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts 1 ATDMA 0 0 0 0 2 ATDMA 0 0 0 0 3 ATDMA 0 0 0 0 4 ATDMA 0 0 0 0

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Re: Slow Speeds on 200mb line

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
JKDHSUBsgvca69834ncxv9873254k;fg87



Primary Downstream Service Flow

SFID294
Max Traffic Rate230000061
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow

SFID293
Max Traffic Rate22000061
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling TypeBestEffort
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Re: Slow Speeds on 200mb line

Network Log

Time Priority Description

01/01/1970 00:54:19Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:55:47Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:55:47Warning!MDD message timeout;CM-MAC=xxx3;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:57:9Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:57:9Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:57:42Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:57:42Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:58:15Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:58:15Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:58:48Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:58:48Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:59:20Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:59:20Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:59:53Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:59:53Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 01:00:26Warning!Lost MDD Timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 01:00:55Warning!MDD message timeout;CM-MAC=xxx;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/07/2019 22:25:46criticalNo Ranging Response received - T3 time-out;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.0;
12/07/2019 19:00:6Warning!RCS Partial Service;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.0;
12/07/2019 19:06:50criticalNo Ranging Response received - T3 time-out;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.0;
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Re: Slow Speeds on 200mb line

Hi Dinsdale87,

 

Thanks for your post, and sorry for the late reply.

 

Are you still having issues with the speeds?

 

Can you confirm how things are on a wired connection?

 

Alex_Rm

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Re: Slow Speeds on 200mb line

Downstream power levels require attention.
1 250750000 8.3 40 256 qam 15
2 170750000 11.1 40 256 qam 5
3 178750000 10.6 40 256 qam 6
4 186750000 10.6 40 256 qam 7
5 194750000 10.4 40 256 qam 8
6 202750000 9.9 40 256 qam 9
7 210750000 9.8 40 256 qam 10
8 218750000 9.1 40 256 qam 11
9 226750000 9 40 256 qam 12
10 234750000 8.6 40 256 qam 13
11 242750000 8.6 40 256 qam 14
12 258750000 8 40 256 qam 16
13 266750000 7.6 40 256 qam 17
14 274750000 7.5 40 256 qam 18
15 282750000 7.5 40 256 qam 19
16 290750000 7.8 40 256 qam 20
17 298750000 7.9 40 256 qam 21
18 306750000 8 40 256 qam 22
19 314750000 8 40 256 qam 23
20 322750000 7.6 40 256 qam 24
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Re: Slow Speeds on 200mb line

Yes, I'm still having issues. It's really slow on wired or wireless. Just done a speedtest on wired. 16mb down and 3mb up.

Do you happen to know anything about the downstream power levels that @BrianY mentioned?

This needs fixing, it's dreadful.

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Re: Slow Speeds on 200mb line

These are the recommended power levels. You have several channels that are out of that range and a lot close to the maximum. You will need a technicians visit to rectify.

Downstream: no lower than -6dBmV and no higher than 10dBmV - Close to 0 is optimal.
Upstream: no lower than 31dBmV and no higher than 50dBmV --- 44dBmV to 46dBmV is optimal.

--------------------
John
--------------------

My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Re: Slow Speeds on 200mb line

Thanks! That helps. 

What does an engineer do though? Is it a router thing? Why is the issue occurred in the first place? Is it something I’ve done? Any ideas?

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Re: Slow Speeds on 200mb line

Probably fit an attenuator to reduce the power levels by 5-10 dBmV

--------------------
John
--------------------

My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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