Question High latency spikes, done everything on my side

Mar 2, 2021
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Hello everyone,

Since a year or so my latency has started to become increasinly worse. Since a few weeks the latency started to peak to 999+ in games such as COD Warzone, Other games in which I used to have ~11 ping now spike to above 200.

What I've done so far:

  • Switched back to Ethernet (did not fix it)
  • contacted ISP and received a new modem, cables and splitter (if those are the correct terms)
  • ran Pingplotter + pinged different hops: hop 2 (our modem), hop 3 and the last hop (see attachments). Ping to our own modem is 1-2ms. The other two hops get timeouts and high pings.
  • ISP sent over a mechanic. He did some measuring, found no issues. I showed him the pingplotter + command prompt screenshots. Said it was devices in our network.
  • Removed all devices except my pc from network, tested ping, still high ping
  • Created a guest network and added our central heating + Ring Doorbell to this network (advice of mechanic)
  • Disabled firewall and tested ping, still high ping
  • Directly connected a laptop to the modem (hop 2) using ethernet cable. Started pingplotter + cmd pings to hop 2, 3 and last hop. Only high ping on the 3rd and last hop.
I followed this post by Bill001g: https://forums.tomshardware.com/threads/ping-spikes-packetloss-issue.3539187/

Does this mean that the problem is with the ISP and not within my own network? I've literally showed them everything I could. Provided them pingplotter and cmd screenshots, all the information inside my modem, and they still can't seem to tell me whats up.
I feel like i'm going crazy, eventhough the issue seems to be bright as daylight if I read the post by Bill001g.

My isp wants to send over the mechanic again to do testing, but I feel like they will provide the same results: nothing.

Here are some screenshots:
View: https://i.imgur.com/Fw6HHpl

View: https://i.imgur.com/94y3rPh

View: https://i.imgur.com/LP0BtMv

View: https://i.imgur.com/XG8oE9R

View: https://i.imgur.com/26ds8GS

View: https://i.imgur.com/TUj0qPh


Thanks in advance!
 
Last edited:

Lutfij

Titan
Moderator
Welcome to the forums, newcomer!

If you've eliminated everything in your network bubble except the ISP and the PC, then the last things to do is make sure your motherboard(PC)'s BIOS is up to date, that you're on version 20H2 for Windows 10, if you're on Windows 10 i.e, that you've uninstalled your NIC drivers and reinstalled them in an elevated command, i.e, Right click installer>Run as Administrator.

Once you've done all that and you yet get high pings, then perhaps the ISP is to blame or that the game server's you're trying to connect to are experiencing some high traffic.
 
What is strange is that the 192.168.2.1 ip address does not show up on your trace and you have 10.255.98.1 in the trace 2 times.

Hard to say what this means.

In any case the loss is someplace close to your house. You see loss in the very first hop of the trace. Normally this would be your router but you also have no loss to the 192.168.2.1.

The problem is going to be in whatever that 10.255.98.1 ip address is.

The latency is also extremely high for the first few hops. This is what a over utilized internet connection looks like. It is also what a wifi connection looks like.
 
Mar 2, 2021
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Hello bill001g,

Could it be that the two 10.255.98.1 are our private ip adresses? I am wired-connected to an accesspoint, which is then wired-connected to our modem. The accesspoint has the ip 192.168.2.253 and the modem has the ip 192.168.2.1.

I did ping the first hop (192.168.2.253) yesterday, but it was also at 1-2ms, just like hop 2.
I am on a wired connection.
 
Well that ones says everything is fine :)

Not sure why pingplotter shows that. One of the reasons I tend to not use tools like this.

I would leave a constant ping run to 192.168.2.1 and 10.255.98.1 instead.

You should see similar results as the pingplot but it makes it harder for the ISP to blame the tool.

This will show that there is no issues with your equipment but there is a problem with the connection between your house and the ISP. It depends what kind of connection it is. Many things like cable modems may give you error messages.

Be very sure you are not exceeding your internet bandwidth. You want to run these test with only the test pc connected and no other programs running on the pc. If for example you have a small DSL connection you can easily overload it and see similar results.
 
Mar 2, 2021
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Yeah that's why I get so annoyed with this problem, it isn't constantly high. Some days its fine, other days its messed up.

The problem occurs even when only one computer is running, and we have 250mbps down and 50 mbps up speed.

I cannot ping to 10.255.98.1. It only gives * * * as results.

Also found the answer to what the 10.255.98.1 is:
Its the IP address of the "cable modem termination system" aka CMTS. Which is supposed to be a router of the ISP for customers in a certain region. (source: https://superuser.com/questions/777866/why-is-tracert-showing-a-private-ip-address-right-after-my-router-even-though-i)

View: https://imgur.com/DtZYVRy
 
I would look a the values in the cable modem. The exact numbers you are going to have to look up because it varies a bit based on the type of docsis.

In many cases the problem is the upstream levels but check all the numbers. Most modems also have a log of some kind. You might see something there. You will always see some small number but you are looking for either large spikes of messages or maybe some of the more serious ones like SYNC failures.

Now this could be interference from a neighbor. If a neighbor for example incorrectly installs a MoCA device it can bleed out of their house and cause problems for the ISP.

The subscriber node not responding to ping commands is a pain. The ISP will attempt to blame other stuff because you can't actually prove there is a problem on the cable connection. I guess the best you can do is show them hop 1 and hop 3 and show them there is no loss.

This mostly a matter of getting a ISP tech who can do more than follow their script. A AI bot is sometime smarter. It has to be something with the ISP network since the modem has been replace which is the very last thing in your house that could cause this.
 
Mar 2, 2021
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I've already forwarded this issue to the ISP forums. They did ask me to upload some of the Modem information.. such as up/downstream values/levels, errors, etc. One expert on the ISP forum said that he could see some noise and that he recommended the "aop" (main connector or whatever term it is) to be replaced.

The forum moderator (ISP employee) wants to send another mechanic to come and do a new check. The last time they did that, the mechanic couldn't find any problems, and said that all the down and upstream values were ok. He also dismissed the "pre RS errors" and "post RS errors" as "normal", while the forum expert says those "pre RS errors" numbers indicate noise.
I've forwarded my recent findings to them, hoping they'll finally take it.

Just as you said, it feels like the ISP is doing everything to put the blame on us. I've already done everything I could within my own network.

I will wait for the answer on their forum.

Thank you big time for now, bill001g. Will post an update later.
 
Mar 2, 2021
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So one small update.

I went to my neighbours to check their ping. Directly connected my laptop to their modem, did the same ping test as I did on my computer. I let my own computer run the ping test at the same time as the laptop at my neighbor's place and saw that the ping spikes at the same time.. at the same hops.
 

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