In reply to a post by mwarby:

I'd suggest that all the modem switching and resetting etc is potentially making the DLM systems think your line is less stable and reducing the speeds

+1

Doesnt explain the buffering tho. Shouldn't get that with his speeds

Hey guy's, Than you for your answers so far.
Just a quick update.

Openreach came, and ran some tests again, He popped off to the cab and done a Lift and shift
And said wait a week and see what happens.

I agree i probably messed the DLM up with the resets.
Currently I'm sitting at 35/6 at the PC and the IP profile set at 38, well bellow the guaranteed speed, I'm hoping it kick up. Soon!

The buffering has all but stopped, we was able to watch a Netflix + play a game on the PC last night with no prob's, but also watching a YouTube at the same time in 2/4k was a prob, this is something we can usually do, but we can't atm it buffered quite bad.

Fingers crossed, I'll post back soon with any more info.

Okay so looks like prob is fix for now, still only 6.75up but Down is nearly back to normal at 47

When asked about the speed drop there was no explanation, HeyHo.....

Thanks again Y'all.

Hi, first time poster, had not even realised that tinkbroadband had a forum and so glad I've found it!

Just to be the noted grey cloud, here.

What I think is happening here is a kind of 'circuit protection', and I have this issue, and it is intermittent, and ongoing. As far as I know they can't/won't fix it, either ... that's not a big javelin to the ISP or to Openreach who do the engineering, just my view on this.

So this happens at whatever the equivalent (in our situation) of what the exchange now is for fibre to the cabinet, and copper to the premises. Something triggers ... something ... there, which then automatically limits your down speed to protect the circuit for whatever reason.

I've had this confirmed as the reason by two separate site visits by OpenReach engineers, and they say that all that can really be done to mitigate it on an individual basis is to up whatever minimum guard is triggering this.

This might be that DLM thing folks mentioned.

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For the record, my average speed is around 55-60Mbps ... but with more direct connectivity it's more like 60-66Mbps download.

This drops to the same speeds that you're seeing, with the confirmation that it's not an ISP based injunction in the upload speed being still the full whack (18-20Mbps) according to my plan.

I've experienced the issue with a (2)PlusNet/TP-Link/LinkSys Routers and OpenReach modem, and with an all in one TP-Link modem-router. I'm well aware that TP-Link aren't the fabbest of fab, but I think that my spread is indicative that (unless I'm the unluckiest fellow alive) this isn't failing equipment causing the alerts on the regular.
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Oh, and FWIW, it is (whatever it is) mentioned a few times on PlusNets own forums, but *never* in support tickets with them. Point of fact, I've been hard pushed to get them (despite the engineers literally diagnosing this) to actually say it in conversation.

I'm not really sure what any of this means for anyone reading this, but I thought it should be made known.

I'm posting under my own name here (twitter handle should be about) to indicate that I'm not just pointlessly making up nonsense. Apologies if I've not used perfect technical terms, either.

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One question I do have for you, @Robie219 is whether or not you use bespoke DNS/Smart DNS or VPN connectivity.

I'll explain ... I *do* use a private DNS server ... and as far as I could ascertain a couple of years back, whenever I switched networks on my LG TV from wired (private DNS) to wireless (public DNS) it would literally cause a disconnect on my service and a drop in allocated speed.

If there is some lazy protection going on here that anyone using different DNS' to the norm is 'bad' ... then ... crikey.

Edited by eliotcole (Wed 13-Apr-22 15:31:57)