topic Re: Connection very flaky in Fibre

Connection very flaky

gouarfig — Wed, 05 Nov 2025 20:31:19 GMT

I've been having issues with my connection for weeks: the speed keeps fluctualing from 5Mb/s to 20Mb/s download (I used to get 25MB/s before) and it can change 3 to 4 times a day.

I'm now on my third factory reset. The chat support is useless: all they do is rebooting the router which usually reconnects at 18MB/s and in all magic the issue is fixed, bye!

Right now it's connected at 13Mb/s. At that speed I'm actually thinking of trying 4G broadband, it can't be worse any more 😄

For information, I'm on FTTC 35, with a Sagemcom Fast5364. I beleive my profile to be up to date 😉

What could be the next step?

Re: Connection very flaky

siphosethu-TT — Thu, 06 Nov 2025 07:15:00 GMT

Hi there @gouarfig, please note that will have to run checks on the issue. I'll need you to confirm if you are currently at home so we can get started. Thanks

Re: Connection very flaky

gouarfig — Thu, 06 Nov 2025 17:59:36 GMT

Yes I'm at home; sorry I didn't see the message earlier.

I will also be at home tomorrow (working from home all day)

Re: Connection very flaky

nambuso-TT — Fri, 07 Nov 2025 07:21:29 GMT

Thank you very much confirming. Do you have any active monitoring for life threatening health reasons which is solely dependant upon your TalkTalk Broadband or Telephone line?

For example a care alarm, lifeline, health pendant or fall detector.

Re: Connection very flaky

gouarfig — Fri, 07 Nov 2025 09:55:58 GMT

Yes, I'm currently at home 🙂

Thank you for your help

Re: Connection very flaky

nambuso-TT — Fri, 07 Nov 2025 09:56:48 GMT

Thank you very much for letting me know. Just to confirming. Do you have any active monitoring for life threatening health reasons which is solely dependant upon your TalkTalk Broadband or Telephone line?

For example a care alarm, lifeline, health pendant or fall detector.

Re: Connection very flaky

gouarfig — Fri, 07 Nov 2025 10:55:33 GMT

No I don't have anything like that. Thanks for asking.

I can also share the 4G on my phone as a backup 😉

Re: Connection very flaky

nambuso-TT — Fri, 07 Nov 2025 10:56:12 GMT

Thanks, Just to confirm will you or anyone who lives with you be able to contact emergency services while your services remail impacted?

Re: Connection very flaky

gouarfig — Fri, 07 Nov 2025 10:58:04 GMT

Yes, we do have 2 mobile phones fully working, it's all good 🙂

Re: Connection very flaky

nambuso-TT — Fri, 07 Nov 2025 10:58:35 GMT

Perfect, Does the problem occur everywhere you try and use the WiFi, or just in certain parts of the house - for example upstairs, or outside the house?

-Issue occurs everywhere

-Issue only occurs in one or some locations

-Issue is not with WiFi

-Issue is with a single device

Re: Connection very flaky

gouarfig — Fri, 07 Nov 2025 11:14:31 GMT

Actually I don't use the Wifi on this router, the Wifi is disabled.

Instead I have a eero mesh connected directly to the router via an ethernet cable.

No wifi issue whatsoever. Just a slow speed (13Mb/s instead of 18Mb/s guaranteed).

It is a bit more stable though: it hasn't re-synced in the last 3 days now (it was disconnecting and changing speed 3 to 4 times a day last week)

Re: Connection very flaky

nambuso-TT — Fri, 07 Nov 2025 11:18:09 GMT

Okay ,so just to confirm the issue is not happening at the moment?

Re: Connection very flaky

gouarfig — Fri, 07 Nov 2025 11:26:51 GMT

Not the random disconnections, so far no.

But an end to end speed test is giving me about half of what I had last month: 10Mb/s download instead of the usual 20Mb/s

Re: Connection very flaky

gouarfig — Sun, 09 Nov 2025 13:27:30 GMT

So the router resynced overnight (at 2am) and is still showing lower than usual connection speed (18Mb/s download, 4.5Mb/s upload).

I was running some speed test this morning on various devices and noticed something new that I never noticed before: some speed testers are displaying network errors. I tried a few different ones on a few different devices.

Attached screenshot from my iPad on Wifi, and my mac mini plugged in on ethernet (NO wifi).

Re: Connection very flaky

Philile-TT — Mon, 10 Nov 2025 07:38:59 GMT

@gouarfig just to confirm, how is the speed right now?

Re: Connection very flaky

gouarfig — Mon, 10 Nov 2025 11:47:06 GMT

The router re-synced twice since, the speed seems to be a bit higher, but there are still packet loss when running some speed tests.

Re: Connection very flaky

Philile-TT — Mon, 10 Nov 2025 12:20:37 GMT

Can I ask that you monitor the speed by checking the functionality of your Wi-Fi when connected, if it drops then, you can get back to us.