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PingPlotter showing major lag spikes


Cajun72
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Hello @Netduma Fraser and team,

I am still experiencing significant and random ping spikes on a weekly basis, causing my internet connection to disconnect for a few minutes.

Following the advice given, I have adjusted the congestion control settings to no avail; however, today's disconnect occurred with only two devices connected.

Previously, I encountered the same issue on the R2 beta version, which prompted me to downgrade to the stable version R2 3.3.280. Unfortunately, the issue persists. As shown, the ping spikes are severe, often exceeding 1000ms and lasting for about 5 minutes before the line stabilizes back to around 6ms.

Could you please advise if this might be an issue with the line, or if it indicates that the R2 device is faulty, given that I have owned it for some time?

pingplotter 2.PNG

pingplotter netduma.PNG

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@Cajun72If you are using a modem, it would be straightforward to connect directly to it and diagnose the issue. If you observe similar results, it is likely that your internet service provider (ISP) is experiencing problems or that something has been damaged and requires repair. Additionally, you can review the modem logs if you have a significant number of uncorrectable errors, as this can provide further evidence of an issue.

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Than you much appreciated I'll try this. it tends to disconnect randomly, so for most of the time it runs along between 5-15ms then out of the blue I encounter this problem.

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  • 2 weeks later...
On 2/25/2025 at 3:39 PM, Netduma Fraser said:

Impossible to say really, could you grab the logs as soon as you're able to after it occurs please?

Hi @Netduma Fraser Just an update. I am still getting the lag spikes but I managed to capture the logs from a snapshot today. This is typical of my experience.
There is a spike here around 150ms  lagspikescrenshotfornetdumaforum.thumb.PNG.03f900c55911294f433b91537ec9f5ad.PNGone here at 14:10:18 I also took a screenshot. Was hoping you could tell if this is a line issue or problem with the router. 

log-1742047973864.txt

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Just an FYI, It would be difficult to test through the modem as suggested before, as we are a family of 4 who use the internet for gaming/streaming. I would need to plug the pc into the modem which would disconnect the wifi and R2 for everyone else.

 

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Yes. To be honest it wasn't that busy either on the network. It got worse later when the whole internet crashed (see ping plotter) - Which I was running in the background as I suspected things were getting worse. I had to unplug the modem and the R2 for 10 minutes before switching back on again.

Capture 5.PNG

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Hard to say if it's the modem then in that case - saturate the network with downloads and use Congestion Control to find the best percentages that stabilizes the plot and then monitor that and see if there are spikes

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I have done that multiple times over the past few months with little change. I even reduced the upload on CC to 50% as recommended on the set up before this and still got those spikes.

Just noticed it is doing it again now even at 00:08 when the network is virtually silent. (attached log and ping plotter screen)

This is the response earlier today from talk talk when they were investigating:

"I can see that your broadband connection is stable and there are no issues showing on the line,
The broadband connection covers the physical cabling into your home and the router from outside your premises, so as that is working the issue you're experiencing is likely to be due to a WiFi problem, or other issue in your home
."

 

 

Capture 6.PNG

log-1742084316959.txt

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@Cajun72

It would be evident if you had a backup router, as sometimes the issue lies not with the router itself but with the modem’s faulty CPU. Alternatively, it could be that someone handling the power levels on the box or line inadvertently caused the problem. 

What do you get on your cable connection page? Are you getting a lot of uncorrectables?

Also use something more reliable like Google, not some BBC Site.

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Good point above, it really would be ideal to check from the modem itself as well. 

The connection is quite stable generally so it could be QoS doing its job but I couldn't say for certain, they're likely seeing a fairly stable connection as well, I doubt they'd be too concerned with a few spikes over a ~10 minute period as really other than gaming it wouldn't be very noticeable for the average user

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