No issues in Wigram for me. That said I’m a bit of an outlier as I’m Chorus fed not Enable like most of Chch. 
probably could do with some more info. Is this a new connection or move of address? Have you made any changes at all? When did it start?

Probably a problem with your connection, best solution is to contact 2degrees support and have them get on the case.

If it is an Ethernet connection at your end, you might have a cable with a broken pair so it can only do 100 Mbit/s.  So try a different cable.  Or a different port on your switch.