Virgin Media Community

[bongo121]

Hello VM Community,

I recently joined Virgin Media as a new customer last month and since then, the high latency spikes makes playing games and talking in voice chat impossible. I have the Gig1 Fibre Broadband Package. 

Speed Test:

The speeds are fine but upload latency is really high from previous tests.

BQMs (Past Week) :

13th-March-202314th-March-202315th-March-202316th-March-2023

Live BQM:

https://www.thinkbroadband.com/broadband/monitoring/quality/share/b2a08a16239315ed6a26324f7974fce76f...

What I've Tried:

• Rebooted router.
• Pinhole reset.
• Reinstalled/updated network drivers.
• Replaced ethernet cables.
• Switched to Modem mode.

and nothing worked. 

[bongo121]

Cable Modem StatusItem Status Comments

Acquired Downstream Channel(Hz)	242000000	Locked
Ranged Upstream Channel(Hz)	0	Failed
Provisioning State	Online	Operational

Downstream bonded channels

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

1	242000000	6	40	QAM 256	14
2	138000000	5.9	40	QAM 256	1
3	146000000	5.8	40	QAM 256	2
4	154000000	5.7	40	QAM 256	3
5	162000000	5.7	40	QAM 256	4
6	170000000	5.4	40	QAM 256	5
7	178000000	5.5	40	QAM 256	6
8	186000000	5.8	40	QAM 256	7
9	194000000	6	40	QAM 256	8
10	202000000	5.9	39	QAM 256	9
11	210000000	6.2	39	QAM 256	10
12	218000000	6.3	40	QAM 256	11
13	226000000	6	40	QAM 256	12
14	234000000	5.9	40	QAM 256	13
15	250000000	5.9	40	QAM 256	15
16	258000000	5.5	39	QAM 256	16
17	266000000	4.5	39	QAM 256	17
18	274000000	5.4	39	QAM 256	18
19	282000000	5.6	40	QAM 256	19
20	290000000	4.5	39	QAM 256	20
21	298000000	5.4	39	QAM 256	21
22	306000000	5.7	39	QAM 256	22
23	314000000	5.8	39	QAM 256	23
24	322000000	6	39	QAM 256	24
25	330000000	6.2	39	QAM 256	25
26	338000000	5.9	39	QAM 256	26
27	346000000	5.5	40	QAM 256	27
28	354000000	5.9	40	QAM 256	28
29	362000000	6.3	40	QAM 256	29
30	370000000	6.1	40	QAM 256	30
31	378000000	5.7	39	QAM 256	31

[bongo121]

Downstream bonded channels

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

1	Locked	40	0	0
2	Locked	40	0	0
3	Locked	40	1	0
4	Locked	40	3	0
5	Locked	40	1	0
6	Locked	40	1	0
7	Locked	40	2	0
8	Locked	40	0	0
9	Locked	40	0	0
10	Locked	39	1	0
11	Locked	39	0	0
12	Locked	40	0	0
13	Locked	40	0	0
14	Locked	40	0	0
15	Locked	40	0	0
16	Locked	39	0	0
17	Locked	39	0	0
18	Locked	39	0	0
19	Locked	40	0	0
20	Locked	39	0	0
21	Locked	39	0	0
22	Locked	39	0	0
23	Locked	39	0	0
24	Locked	39	0	0
25	Locked	39	0	0
26	Locked	39	0	0
27	Locked	40	0	0
28	Locked	40	0	0
29	Locked	40	0	0
30	Locked	40	0	0
31	Locked	39	1	0

[bongo121]

Upstream bonded channels

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

Not Available

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

Not Available

[bongo121]

General Configuration

Network accessMaximum Number of CPEsBaseline PrivacyDOCSIS ModeConfig file

Allowed

1

Enabled

3.1

kldJKDHSUBsgvca69834ncxv9

Primary Downstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic Rate

16547

1200000450 bps

42600bytes

0 bps

Primary Upstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic RateMax Concatenated BurstScheduling Type

16681

55000270 bps

42600bytes

0 bps

16320bytes

Best Effort

[bongo121]

Time Priority Description

16-03-2023 14:29:02	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 14:29:02	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 13:21:02	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 13:21:02	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 10:17:01	warning	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 10:17:01	notice	US profile assignment change. US Chan ID: 14; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 10:16:58	notice	REGISTRATION COMPLETE - Waiting for Operational status
16-03-2023 10:16:58	warning	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 10:16:53	notice	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 10:16:41	warning	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 10:16:38	notice	Honoring MDD; IP provisioning mode = IPv4
16-03-2023 10:16:33	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
16-03-2023 10:16:21	critical	Cable Modem reboot from UI
14-03-2023 22:25:01	critical	Received 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;
14-03-2023 22:24:16	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 13:18:09	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 13:17:57	critical	Cable Modem Reboot via RG reboot command
10-03-2023 13:16:17	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
10-03-2023 13:16:05	critical	Cable Modem reboot from UI
09-03-2023 11:55:14	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 11:55:02	critical	Cable Modem reboot from UI
09-03-2023 03:46:54	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 03:46:49	critical	Received 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 03:46:46	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 03:46:33	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
09-03-2023 03:46:30	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
07-03-2023 15:56:27	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
07-03-2023 09:38:10	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
07-03-2023 09:37:57	critical	Cable Modem reboot from UI
04-03-2023 00:38:30	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
04-03-2023 00:38:18	critical	Cable Modem reboot from UI
03-03-2023 22:12:34	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[bongo121]

Anyone?

[bongo121]

Bump

[legacy1]

Seems odd you getting spikes past midnight its as if you have something doing random packet bursts causing your connection to spike.

If you have a clean PC you could over night put hub in modem mode with it and setup a new BQM and allow ICMP inbound on firewall to see what you get.

[forshawj]

I have similar high latency issues but not as severe as yours.. I have recently installed 3x Wi-Fi Max Pods and wonder if they are causing the issue for me?? I live in a busy road and see lots of other Wi-Fi networks including Virgin and BT .. maybe my issue is due to outside factors although before I switched over to pods I didn’t seem to get the latency issues…

I have raised another thread with my details / signal etc and hopefully someone will reply on that. But interested on what your predicament is…