It's perfectly OK for the vast majority of their ~780,000 customers. Otherwise they wouldn't be supplying it.
The poster isn't even on landline broadband and hasn't been for a considerable period.
I joined Plusnet about two years ago, and already had a decent router. When that packed in I decided to give the Plusnet one a try.
After a while I began to doubt its wireless capabilities, which importantly is the only significant complaint about it, although it wasn't too bad for free. (Postage cost). I now have an ASUS which is quite good.
Don't forget that wireless LAN is very susceptible to surrounding ones.
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.