In reply to a post by adslmax:

Don't think can't do anything about it. The same spikes with my previous FTTC and G.fast and now with FTTP.

No worries, yours just doesn't look like any other FTTP BQM I've ever seen. Mine typically doesn't have spikes over 10ms or packet drops and I'm using the bog standard Plusnet Hub Two. I do see latency increase a bit if I use all the bandwidth for a prolonged time like a data integrity check on remote backups but then it probably goes to around 20ms.

Edited by PCJM40 (Wed 14-Jan-26 18:57:51)

I can see every two hours there is spikes on it. Maybe the TP Link BE3600 caused it? see my arrow marks on it.

https://i.ibb.co/B5QY8tSS/Screenshot.png

Router CPU & Memory usage

https://i.ibb.co/vvV6c7Qd/Screenshot-1.png

Cisco Real Speed

https://i.ibb.co/Gq4yysX/Screenshot-2.png

Live TBB BQM Plusnet using Plusnet Hub Two Router on FTTC 80/20

https://i.ibb.co/JWsGFGPG/Screenshot-3.png

Live TBB BQM Cerberus using Openreach Gfast Modem on G.fast 330/50

https://i.ibb.co/qMdCmkCj/Screenshot.png

Edited by adslmax (Wed 14-Jan-26 21:54:09)

In reply to a post by adslmax:

I can see every two hours there is spikes on it

Yes I noticed them, they don't appear on your Plusnet or Cerberus screenshots so may be caused by a device connected to the FTTP router as they seem to occur day and night. I was more concerned about the amount of 160ms spikes throughout the day apart from between 03:30 and 09:30. There may be an innocent reason but if it was me I would want to understand why. May be make a note of when you do heavy downloads and compare that with the graph and see if they match up. Also you could check what devices you have connected to the FTTP router and while you still have your other legacy broadband connections move them all over to one of them and over time gradually bring them back and monitor between each to see if and when these spikes come back.

Edited by PCJM40 (Wed 14-Jan-26 22:40:03)

Sadly can't use Plusnet Hub Two for FTTP because the username / password is only for Plusnet only (can't use it for Aquiss FTTP PPPoE Login) as the hub two router are locked down.

In reply to a post by PCJM40:

I was more concerned about the amount of 160ms spikes throughout the day apart from between 03:30 and 09:30.

yeah its quite noticeable on the aquiss one, but also on vdsl, and g.fast

In reply to a post by PCJM40:

There may be an innocent reason but if it was me I would want to understand why. May be make a note of when you do heavy downloads and compare that with the graph and see if they match up. Also you could check what devices you have connected to the FTTP router and while you still have your other legacy broadband connections move them all over to one of them and over time gradually bring them back and monitor between each to see if and when these spikes come back.

He can do this whilst on fttp, but it would be easier swapping some of the other devices in the way you suggested.. I'm not sure what how the xbox does things as i've never owned one nor seen one on a network to comment. Also it could be something else too. I'm only thinking of the xbox because of larger downloads, but then it shouldn't cause 160ms spikes esp on fttp. Plus at 1gbits, you tend to get nicer sharing of bandwidth with multiple devices then say at 20mbits

In reply to a post by Taras:

Is there extra padding on ipv6 vs v4 (not really ever looked into it)?

The IP headers are 20 bytes larger on IPv6 compared to IPv4.

This gives you a maximum payload throughput on a TCP stream of ~942Mbps on IPv4, and ~928Mbps on IPv6.

In reply to a post by candlerb:

In reply to a post by Taras:

Is there extra padding on ipv6 vs v4 (not really ever looked into it)?

The IP headers are 20 bytes larger on IPv6 compared to IPv4.

This gives you a maximum payload throughput on a TCP stream of ~942Mbps on IPv4, and ~928Mbps on IPv6.

Thanks Candlerb! I used the word "padding" in a generic sense. I would even call stop and start bits "padding" lol.

In reply to a post by adslmax:

Sadly can't use Plusnet Hub Two for FTTP

Haven't you already tried two routers? really these 160ms spikes are either caused by devices connected to the FTTP router or they are the ISP, I can't see them being caused by the Openreach infrastructure.

Sorry Max, I honestly thought I was helping but based on below comment you made today I won't say anything more about this.

I am getting sick of tired with some bloke from think broadband forum suggest my full fibre isn't great at all due to BQM spiked and too high latency. But I think it down to TTB server. Not my connection at all.

In reply to a post by PCJM40:

Haven't you already tried two routers? really these 160ms spikes are either caused by devices connected to the FTTP router or they are the ISP, I can't see them being caused by the Openreach infrastructure.

I don't think it was caused by any ISP. More likely down to Wellington Exchange caused spiked. I used to have Aquiss FTTC before but I have deleted BQM, wish I never did so I can look back on history to see if there is still spiked 160ms on it.