We hear you and it does sound like there must be an issue as you should have experienced a good improvement. Sometimes an oversight over a single small detail during an upgrade can mean it doesn't deliver. Agree that Speedtest is poor for measuring mobile data speed, but if you've noticed no improvement during normal browsing sessions then we have a problem.
I'll tell the team that we have information from a very good source that the upgrade in Rotorua hasn't worked and get them to look into it further.
Thanks Hamish, significant improvement today, steaming video 1.50 was fully buffered by 22 seconds from international site and pages now fully displaying graphics, looks good