Yes, the 'magic' of a factory reset of your modem.
I read most of the issues posted here and 90% of them would be fixed with a factory reset of the modem.
I'm astounded it's not one of the first things suggested by a T1 helpdesk attendant.
Welcome to the Community!
There are many factors which is outside of our control that may affect the NBN services, such as the performance of third party suppliers and equipment, force majeure events and your hardware and software configuration.
Nonetheless, our Engineering team is now looking into this and should be in touch via phone call or SMS for any updates available.
We apologise for the inconvenience.
+ phone call from TPG support but no voice (or playing silly or voip issue their end
+ phoned TPG support, auto call back in 20
+ sms 1-2 minutes later
+ Ping of 9-12ms, Download of 75-85 Mbps, Upload of 35-38 Mbps on a 100 Mbps plan
> looks we are back to normal
> so no change to ping or upload rates just the download down to about 1/4 of normal