All of the above is jibberish to me Bob. I am only repeating what I have been told by my ISP _ My resold TTB - The all important B indicating Business, being resold BT Fibre - We can split hairs over descriptions, but it won't alter the product. As for TT congestion, I have plenty of TBB BQM days that show peak time slowdown and raised latency prior to recent changes, but I expect you have access to those.

Below is an example of a usual evening and lunchtime peak time nightmare. Could not even play poker on-line without getting sat out - Note the what was magical switch at midnight and midday. take no notice of the big red band - New router and took a while to make it pingable. Finally getting things sorted without OR modem, will not play ball with either variety.
http://www.thinkbroadband.com/ping/share/c43fc5ca942...

Edited by professor973 (Tue 30-Jun-15 16:25:03)

Take it you have only had this issue since going from TT ADSL to TT Fibre?

Long before that - It was the reason I left Freeola (Enta) for BB and Zen for line. Line rock solid for years till fibre work started and nightmare ever since. OR engineers will not even look at the exchange or copper if no phoneline fault shows. The switch to fibre and bring my copper to 300m to the cab was supposed to be the cure. Also TT fibre is a beast for compatibility with hardware. I have always suspected the exchange at fault, and though my fibre copper is just from the cab, my phone copper is still from exchange to cab and could be interfering. If only I could switch pairs of something, it might at least cross off that theory. Nothing to do with P8, they have been brilliant at any our of the weekend even. a conundrum still not totally sorted, but making progress. Just leaving things to settle now and hope DLM does it's job, but still running around 60 meg not not crying over the wait.

I can see regular latency spikes there. (Six days ago). Those occur on some connections on many ISPs, even when not in use. I've no idea what causes them.

See for example on this Plusnet page. Jaggies at the top left, w3 on the right on row three. Ronski row 4 left. That's as far as I've looked. Without waiting a bit they don't seem evident on your live one.

I don't like the recurrent large packet loss. on the old one, but see it has gone on the live one.

I think to discuss yours we need a new thread somewhere really. The OP's problem is different, and directly speed-related. A BQM doesn't give any indication of that.

The regular 2.5 hour latency spikes were a admitted fault on the Billion 8800NL router. That has been returned. http://www.billion.uk.com/forum/viewtopic.php?f=19&t... Getting to grips now I've binned the OR modems. Tried both for cab compatibility but would not play ball. next was the TP-Link TD-W9980, but needed an update to make it compatible with TT, but still a problem. See first 5 star review http://www.amazon.co.uk/product-reviews/B00NEQZ12Y/r... Pulse8 advised a MTU of 1458, the same as ADSL2+, but pinging lower and lower till I got no dropped packets, then adding 28 for overheads, bought me to the 1432 stated by TT. http://help2.talktalk.co.uk/what-mtu So I nailed the router AND both pc interfaces to MTU 1432 and along with no OR modem, I have the results you see now. TT oddities and no router supplied as if with BT makes a minefield to navigate. Some sites showing the odd packet loss, so might lower MTU another couple of points, but letting things settle now - Sleeping dog lie and all that lol - Sorry to highjack the thread, it was the regular switch at a given time that pulled me in.

Edited by professor973 (Tue 30-Jun-15 17:36:00)

TalkTalk Fibre should be at 1500

In reference to help2.talktalk.co.uk/what-mtu:

Please note: There is one exception to this rule with TalkTalk fibre routers. They normally have the MTU set to 1500 and you should not change this to 1432.

No - ONLY if running TT router. I know they are ADSL2+ values, but TT give nothing else anywhere, so the world assumes they are to be followed. They just say 1500 if using TT router, nothing about 1500 for fibre. Also 1432 is my max without dropping packets.
http://help2.talktalk.co.uk/what-mtu

Edited by professor973 (Tue 30-Jun-15 19:10:59)

I know replying to oneself is hardly cricket within fora, but my setup has now reduced me to arguing with myself. Things much improved since pulling the OR modem. Checking now shows my router has adjusted itself to a MTU of 1492. So will alter the pc interfaces to 8 bytes less than that later, taking the Memsaab out to dinner first (Two second places for our nags today).

Edited by professor973 (Tue 30-Jun-15 19:17:04)

I eventually had to contact the Post Office since they never called back. Got hold of an honest CS person who, in summary, told me that there was no point in trying to get this resolved since the Broadband Team would only just keep delaying a response and had no money to fix these problems anyway.

I was offered the usual 'no penalty to leave my contract' but explained that I was outside my contract period and had been paying for a service they couldn't deliver. To which he gave me the address of the Complaints Dept. and suggested that I could probably get some compensation.

This I will do but I will also contact Ofcom and ISA to make the point that the PO do not spell out this type of service slow down.