Huge packet loss/Latency increase before midnight

[Yejin]

Hello!

I've been having a huge increase in ping/latency to many games and online services (For example, Final Fantasy XIV to 204.2.229.11 is 200-220ms when usually its a stable 150) and also constant packet loss reporting from games that allow it (Apex legends "twitches" when a packet is dropped, it is constant and the warning regularly appears). These problems stop the around midnight to 1AM, and start again around 5:30am from what I can tell. Pings to 1.1.1.1 turn back between 12 and 22ms during the day and consistent 11-12 during the night. Here is the 24 hours prior to me making this thread on the Broadband Quality Monitor.

https://www.thinkbroadband.com/broadband/monitoring/quality/share/6878f9e476179d2bac6a7c92983fd592f7...

I am on virgins Gigabit network if that helps at all. This was not a problem Until about 10 days ago.

[Icantcrabhere]

Your graph is pretty much perfect, other than the odd little spike - but that doesn't matter.
Can you run a traceroute and post the results,
from both when ping is higher than usual and when it's normal?

I'm also getting elevated ping to FFXIV, although I'm on an EU server - you're on Crystal i'd guess, by the IP?

https://community.virginmedia.com/t5/Speed/High-ping-latency-to-Cloudflare-DNS-servers/m-p/5090290#M...
Seems to be pretty heavily related to this (for me, at least) - when the pings to Cloudflare returns to normal, so does my FFXIV connection.
as much as you shouldn't have to, you should just run through a VPN for now until it's ironed out.

Also just to rule anything else out:
Can you post your modem logs(Upstream, Downstream, Network log, etc) - copy and paste is better than screenshots.
The forum will automatically filter out MAC addresses from Network logs.

[Yejin]

This is about to be one hell of a chunky post! i'll edit in the post midnight tracert when the time comes!

Trace RT from pre midnight:

  1     1 ms     1 ms     1 ms  192.168.0.1
  2     *        *        *     Request timed out.
  3    17 ms    11 ms    11 ms  nrth-core-2b-xe-815-0.network.virginmedia.net [62.253.128.121]
  4     *        *        *     Request timed out.
  5     *        *        *     Request timed out.
  6     *        *        *     Request timed out.
  7    21 ms    19 ms    17 ms  host-62-254-42.174.not-set-yet.virginmedia.net.42.254.62.in-addr.arpa [62.254.42.174]
  8     *        *        *     Request timed out.
  9    16 ms    19 ms    18 ms  uk-lon01c-ri2-ae-6-0.aorta.net [84.116.136.98]
 10    16 ms    16 ms    16 ms  ae-8.a02.londen12.uk.bb.gin.ntt.net [129.250.66.101]
 11    16 ms    14 ms    16 ms  ae-0.r21.londen12.uk.bb.gin.ntt.net [129.250.3.214]
 12    90 ms    96 ms    95 ms  ae-13.r25.asbnva02.us.bb.gin.ntt.net [129.250.2.111]
 13    91 ms    96 ms    90 ms  ae-1.r24.asbnva02.us.bb.gin.ntt.net [129.250.2.37]
 14   150 ms   150 ms   149 ms  ae-2.r24.snjsca04.us.bb.gin.ntt.net [129.250.6.237]
 15   154 ms   153 ms   153 ms  ae-4.r00.scrmca02.us.bb.gin.ntt.net [129.250.7.57]
 16   158 ms   153 ms   154 ms  xe-0-1-0-1-1.r00.scrmca02.us.ce.gin.ntt.net [192.80.16.2]
 17   153 ms   153 ms     *     204.2.229.230
 18   154 ms   153 ms   151 ms  204.2.229.11

 Trace RT From 1am

<code sample here>

3.0 Upstream channels

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

1	39400000	47.3	5120 KSym/sec	64QAM	2
2	46200000	47.5	5120 KSym/sec	64QAM	1
3	25800000	48.5	5120 KSym/sec	32QAM	4
4	32600000	47.8	5120 KSym/sec	32QAM	3

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	3	0
2	US_TYPE_STDMA	0	0	0	0
3	US_TYPE_STDMA	0	0	0	0
4	US_TYPE_STDMA	0	0	0	0

3.0 Downstream channels

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

25	331000000	-2.4	39	QAM256	25
1	139000000	-2.6	38.6	QAM256	1
2	147000000	-2.6	38.6	QAM256	2
3	155000000	-2.3	38.6	QAM256	3
4	163000000	-2.7	39	QAM256	4
5	171000000	-3	39	QAM256	5
6	179000000	-3.2	39	QAM256	6
7	187000000	-3.2	39	QAM256	7
8	195000000	-3.5	39	QAM256	8
9	203000000	-3.5	39	QAM256	9
10	211000000	-3.7	39	QAM256	10
11	219000000	-4	39	QAM256	11
12	227000000	-4.1	38.6	QAM256	12
13	235000000	-4.3	38.6	QAM256	13
14	243000000	-4.6	38.6	QAM256	14
15	251000000	-4.6	38.6	QAM256	15
16	259000000	-3.7	38.6	QAM256	16
17	267000000	-3.8	39	QAM256	17
18	275000000	-3.7	39	QAM256	18
19	283000000	-3.3	38.6	QAM256	19
20	291000000	-3	39	QAM256	20
21	299000000	-2.5	39	QAM256	21
22	307000000	-2.4	39	QAM256	22
23	315000000	-2.3	39	QAM256	23
24	323000000	-2.5	39	QAM256	24
26	339000000	-2.5	39	QAM256	26
27	347000000	-2.9	38.6	QAM256	27
28	355000000	-3.2	39	QAM256	28
29	363000000	-3.1	39	QAM256	29
30	371000000	-2.9	39	QAM256	30
31	379000000	-3.2	39	QAM256	31

[Yejin]

3.0 Downstream channels

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

25	Locked	38.983261	0	0
1	Locked	38.605377	0	0
2	Locked	38.605377	0	0
3	Locked	38.605377	0	0
4	Locked	38.983261	0	0
5	Locked	38.983261	0	0
6	Locked	38.983261	0	0
7	Locked	38.983261	0	0
8	Locked	38.983261	0	0
9	Locked	38.983261	0	0
10	Locked	38.983261	0	0
11	Locked	38.983261	0	0
12	Locked	38.605377	0	0
13	Locked	38.605377	0	0
14	Locked	38.605377	0	0
15	Locked	38.605377	0	0
16	Locked	38.605377	0	0
17	Locked	38.983261	0	0
18	Locked	38.983261	0	0
19	Locked	38.605377	0	0
20	Locked	38.983261	0	0
21	Locked	38.983261	0	0
22	Locked	38.983261	0	0
23	Locked	38.983261	0	0
24	Locked	38.983261	0	0
26	Locked	38.983261	0	0
27	Locked	38.605377	0	0
28	Locked	38.983261	0	0
29	Locked	38.983261	0	0
30	Locked	38.983261	0	0
31	Locked	38.983261	0	0

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

33

96

4K

1880

QAM4096

759

3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

33

Locked

41

-3.2

461283002

86

Network Log

Time Priority Description

Thu 01/01/1970 00:01:26	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Wed 10/08/2022 22:06:38	5	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 11/08/2022 01:52:36	6	CM-STATUS message sent. Event Type Code: 24; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[Icantcrabhere]

Your ping is looking about as expected, to an NA server at least. - Seems like the routing/WhateverElseItWas issue is fixed for now (mine included)
So FFXIV ping/packet loss should have returned to about normal for you now, right?

Your power levels and such look fine,
A little high end on the upstream, but still in spec.

HOWEVER
Not directly related to your FFXIV issue you were having:

3.0 Upstream channels

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

1	39400000	47.3	5120 KSym/sec	64QAM	2
2	46200000	47.5	5120 KSym/sec	64QAM	1
3	25800000	48.5	5120 KSym/sec	32QAM	4
4	32600000	47.8	5120 KSym/sec	32QAM	3

The part highlighted in red should both be 64.

Although i hate to say it, because it seems like generic response:
Can you make sure all connections are finger tight (Coaxial cable etc), although I'm doubtful that's what is causing the modulation drop.
(Improperly connected/terminated connections can drop your modulation, it's the only reason I ask )



Someone from VM should be along in a few days to assess if there's any other issues.

[Martin_N]

Hi Yejin,

Thank you for your post. I'm very sorry for the issues you've had with your service. 

Can you confirm if you've still been having any issues or whether this has now been resolved?

^Martin