That looks like the speed difference between being on Fast Path
. Interleaving is used when there is a fair number of errors on the line, as it allows in-flight correction of nearly all of them. Whereas on Fast Path any error packet has to be retransmitted and if there are quite a few then it's like trying to drink while you have the hiccups.
Unfortunately, on FTTC interleaving does lower the speed by that sort of amount. On ADSLx it made no difference in most cases.
It's possible the new HH5 will have fewer errors. If so, and if interleaving is the cause
of the slowdown, in 2-3 weeks the DLM (Dynamic Line Management) may turn off interleaving.
My broadband basic info/help site - www.robertos.me.uk
| Domains,site and mail hosting - Tsohost
Connection - Plusnet
UnLim Fibre (FTTC). Sync ~ 59.4/14.4Mbps @ 600m. - BQM
"Where talent is a dwarf, self-esteem is a giant."
- Jean-Antoine Petit-Senn.
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.