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AiridasM240
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Low broadband speed issues (Whilst using wired & WiFi)

Hello,

Recently I've started to notice broadband speed issues that have started to occur since about 2 days ago ish. The issue occurring is that my download speed severely drops as low as 2mbp/s and just stays in the range of 2/15mbp's as if it's getting capped at that speed.

However my upload speed seems to be fine even with the severely low Download speed, my upload speed still averages in the 35mbp/s area. Our broadband is the M350 and prior to this my devices that I most commonly use for higher speeds such as my Gaming PC and the Xbox Series X (was lucky to get that early lol) in which the download speeds were in the 200-450 mbp/s ranges this whole time (both devices are also wired).

This started to occur 2 days ago in which whilst I was playing NBA 2K21 on my Xbox Series X it's started to become extremely choppy. I then ran a network test to notice my download speed was at 11mbp/s at that time. To troubleshoot I simply reset my router, hard reset my Xbox and the issue still persisted. No other issue occurs that could have fault such as NAT type was open, 0% pocket loss I proceeded to then go to customize my Hub (3.0) and proceeded to performing some port forwarding for my console (3074 UDP & TCP and etc). Which seems to work for a minute and then reverted back to the issue.

I then went through the virgin media help page to see any other troubleshoot options to take so I factory reset my Hub, tested my connect on both my PC and Console for WIFI and Wired connection in which the low speed still persisted. Little thing I noticed anytime I reset the router the download speed would rise to 250-400mbp/s like normal for about 2 mins and instantly drop back to 15mbp/s on the devices, Same issue occurs on my Pc. I've also tested other devices such as my Iphone, laptop and same issue occurring so I believe it's might be a hardware issue of the modem than my console or PC. 

Lastly keep in note that my broadband is M350 and the average speeds I should be getting whilst wired should be in the 250-450 mbp/s range which was the case prior to this issue.  

My Broadband Information:

  • Virgin Media M350 (average speeds of 362 mbp/s)
  • Both devices tested were done wired (ethernet) and wireless
  • Device adapters are up to date (Xbox Series X and recently new gaming PC)
  • Ethernet Cables are new and are capable of high speed transmissions
  • Router in the same room as the devices 

Sorry for the essay of writing lol but would be helpful if anyone has any other advice to give or has the same issue ocurring.

Thank you.

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Anonymous
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Re: Low broadband speed issues (Whilst using wired & WiFi)


@AiridasM240 wrote:

Hello,

Recently I've started to notice broadband speed issues that have started to occur since about 2 days ago ish. The issue occurring is that my download speed severely drops as low as 2mbp/s and just stays in the range of 2/15mbp's as if it's getting capped at that speed.

However my upload speed seems to be fine even with the severely low Download speed, my upload speed still averages in the 35mbp/s area. Our broadband is the M350 and prior to this my devices that I most commonly use for higher speeds such as my Gaming PC and the Xbox Series X (was lucky to get that early lol) in which the download speeds were in the 200-450 mbp/s ranges this whole time (both devices are also wired).

This started to occur 2 days ago in which whilst I was playing NBA 2K21 on my Xbox Series X it's started to become extremely choppy. I then ran a network test to notice my download speed was at 11mbp/s at that time. To troubleshoot I simply reset my router, hard reset my Xbox and the issue still persisted. No other issue occurs that could have fault such as NAT type was open, 0% pocket loss I proceeded to then go to customize my Hub (3.0) and proceeded to performing some port forwarding for my console (3074 UDP & TCP and etc). Which seems to work for a minute and then reverted back to the issue.

I then went through the virgin media help page to see any other troubleshoot options to take so I factory reset my Hub, tested my connect on both my PC and Console for WIFI and Wired connection in which the low speed still persisted. Little thing I noticed anytime I reset the router the download speed would rise to 250-400mbp/s like normal for about 2 mins and instantly drop back to 15mbp/s on the devices, Same issue occurs on my Pc. I've also tested other devices such as my Iphone, laptop and same issue occurring so I believe it's might be a hardware issue of the modem than my console or PC. 

Lastly keep in note that my broadband is M350 and the average speeds I should be getting whilst wired should be in the 250-450 mbp/s range which was the case prior to this issue.  

My Broadband Information:

  • Virgin Media M350 (average speeds of 362 mbp/s)
  • Both devices tested were done wired (ethernet) and wireless
  • Device adapters are up to date (Xbox Series X and recently new gaming PC)
  • Ethernet Cables are new and are capable of high speed transmissions
  • Router in the same room as the devices 

Sorry for the essay of writing lol but would be helpful if anyone has any other advice to give or has the same issue ocurring.

Thank you.


Create a BQM and post the live link.

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AiridasM240
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Re: Low broadband speed issues (Whilst using wired & WiFi)

Hello,

Just created a BQM and created a live Graph

Link:

https://www.thinkbroadband.com/broadband/monitoring/quality/share/ca99cfd9b95478d5f6923e9659061a22bbed5482

 

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Anonymous
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Re: Low broadband speed issues (Whilst using wired & WiFi)


@AiridasM240 wrote:

Hello,

Just created a BQM and created a live Graph

Link:

https://www.thinkbroadband.com/broadband/monitoring/quality/share/ca99cfd9b95478d5f6923e9659061a22bbed5482

 


It will take a while to show meaningful data, however it does already look terrible:

carl_pearce_0-1611951792000.png

 

Could you access your router using http://192.168.0.1/ or http://192.168.100.1 for modem mode. Log in, select the 'Advanced settings / Tools / Network status' option and paste your 'Downstream', 'Upstream', and 'Network Log' tabs? Please copy/paste this data as text, split between multiple posts (Sometimes you have to click 'Post' twice due to an error message).

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AiridasM240
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Re: Low broadband speed issues (Whilst using wired & WiFi)

Downstream bonded channels

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

12987500004.536256 qam21
2138750000435256 qam1
31467500004.130256 qam2
4154750000431256 qam3
51627500003.732256 qam4
61707500003.734256 qam5
71787500003.535256 qam6
81867500003.527256 qam7
91947500003.226256 qam8
10202750000328256 qam9
11210750000335256 qam10
122187500003.234256 qam11
132267500003.235256 qam12
142347500003.536256 qam13
152427500003.536256 qam14
162507500003.936256 qam15
17258750000436256 qam16
18266750000436256 qam17
192747500004.136256 qam18
20282750000436256 qam19
212907500003.936256 qam20
22306750000436256 qam22
233147500003.736256 qam23
243227500004.137256 qam24



Downstream bonded channels

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

1Locked36.62450
2Locked35.71624616
3Locked30.4587699903124456
4Locked31.1547248701350123
5Locked32.5503493841426004
6Locked34.94954750
7Locked35.534820
8Locked27.1149988738160172621
9Locked26.638693974339780717
10Locked2864085931140270484
11Locked35.510060
12Locked34.91076020
13Locked35.511880
14Locked36.32300
15Locked36.62830
16Locked36.62070
17Locked36.62260
18Locked36.65190
19Locked36.67770
20Locked36.39720
21Locked36.62250
22Locked36.61970
23Locked36.61710
24Locked37.31300

 

---------------------------------------------------------------------------------------------------------

Upstream bonded channels

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

13939962847.5512032 qam2
24619986247.8512032 qam1
32579940647.3512032 qam4
43259987347.5512064 qam3



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

 

 

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AiridasM240
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Re: Low broadband speed issues (Whilst using wired & WiFi)

Network Log
 
Time              Priority         Description
29/01/2021 22:19:21Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 22:19:13noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:22:8Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:22:7Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:21:39Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:21:32Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:21:24Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:21:24Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:20:42Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:20:23Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:19:8Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:19:5Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:18:37Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:18:35Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:18:28Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:18:26Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:18:5Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:18:0Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:16:19Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/01/2021 20:16:11Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

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Anonymous
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Message 7 of 10
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Helpful Answer

Re: Low broadband speed issues (Whilst using wired & WiFi)

Looks like a local SNR issue.

You need to confirm with VM.

 

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AiridasM240
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Re: Low broadband speed issues (Whilst using wired & WiFi)

Don't know much about SNR, is that an issue on my end or ?

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AiridasM240
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Re: Low broadband speed issues (Whilst using wired & WiFi)

Ok, I believe I figured out the issue because of your assessment.

I've had issue with My Xbox Series X turning itself whilst playing games so I purchased a small portable fan that blows next to the Console to help with ventilation if it is overheating (still don't know the issue of that tbh).

Anyways my Pc and Console a pretty much side by side with a wooden wall of my table being in between. Noticed when I turned of this portable fan my download speed on Xbox shot up to 444 Mbp/s. I then turned it off n on (the fan) to see if its the cause and it seems to be the case. 

Don't know much about SNR but am assuming it's got something to do with sound correct and the correlation to the cause. If so thank you for helping out. Although if I can't use the fan for ventilation of my console that makes a different issue at hand lol. oh well, I'll see what I can do.

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Anonymous
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Message 10 of 10
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Re: Low broadband speed issues (Whilst using wired & WiFi)


@AiridasM240 wrote:

Ok, I believe I figured out the issue because of your assessment.

I've had issue with My Xbox Series X turning itself whilst playing games so I purchased a small portable fan that blows next to the Console to help with ventilation if it is overheating (still don't know the issue of that tbh).

Anyways my Pc and Console a pretty much side by side with a wooden wall of my table being in between. Noticed when I turned of this portable fan my download speed on Xbox shot up to 444 Mbp/s. I then turned it off n on (the fan) to see if its the cause and it seems to be the case. 

Don't know much about SNR but am assuming it's got something to do with sound correct and the correlation to the cause. If so thank you for helping out. Although if I can't use the fan for ventilation of my console that makes a different issue at hand lol. oh well, I'll see what I can do.


I'm shocked that that would make such a difference as SNR (Signal to Noise Ratio) is based on how 'noisy' the line is coming into your home.

You can see in your BQM that the issue was resolved around 12am (No red packet loss):

carl_pearce_0-1612007520000.png

 

Could you posts the stats again, specifically this section:

Downstream bonded channels

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

12987500004.536256 qam21
2138750000435256 qam1
31467500004.130256 qam2
4154750000431256 qam3
51627500003.732256 qam4
61707500003.734256 qam5
71787500003.535256 qam6
81867500003.527256 qam7
91947500003.226256 qam8
10202750000328256 qam9
11210750000335256 qam10
122187500003.234256 qam11
132267500003.235256 qam12
142347500003.536256 qam13
152427500003.536256 qam14
162507500003.936256 qam15
17258750000436256 qam16
18266750000436256 qam17
192747500004.136256 qam18
20282750000436256 qam19
212907500003.936256 qam20
22306750000436256 qam22
233147500003.736256 qam23
243227500004.137256 qam24

 

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