Hi - I am signed up to the Medium Superbroadband deal of TalkTalk (38/1.8Mbps down/upload speeds). When everything is working fine, this is roughly what I get (testing using Ookla) using Ethernet. But over past 6 weeks I have had increasing problems with dropping (from between few seconds to up to 6 hours). In addition, my speeds can vary hugely (& randomly) ie no obvious pattern such as slowing down in evenings only etc. Been in discussion with TalkTalk Community for past 3 weeks but situation not resolved (they suggest I need new router - I am on about my 5th, & I am sure (sorry - gut-feeling!!) it is not router problem). One of the (Win 8.1/FF) messages I get (other than "unable to connect") is "Latency test error". A bit of digging suggested I should use ping & tracert cmds - when working, I get pings of ca 15 ms, but can range up to > 500ms, or complete dropping of packages (request timed out). I have also read that the FIRST line of the tracert should return times of < 1ms (ie the 1st hop). Sometimes I get this, sometimes 4 to 5 ms. Again, I get VERY varaible speeds for remaining hops - comparing like with like - anything from 20 ms -> 1000 ms -> Request timed out.
I had TT engineer out yesterday, & of course the internet was working fine ... he is suggesting problem lies with LAN setting at telephone exchange/cabinet. Could there be other causes?? eg the external BT line comes to the outer wall of (next doors) proprty & splits into our & their line. I had a look at the "junction box" today but could not see anthing useful, other than 1) asking our neigbour who complains about poor recption of her landline (ours is fine), & to note that BT installed a new line from our house to (old) this box about 5 years ago.
I guess my bottom line Q is: why do I get such extreme fluctuations, and what are the possible causes. Can i do any further tests myself?