Welcome to the community!
I am sad to know that you're having speed issues with the service.
There are different types of speed issues that you may experience:
1. Speed issues caused by a line fault on TPG or NBN's network. Affecting all device(s) LAN/Wireless connected to the modem/router this may require a real-time test and investigation by our Technicians and Engineers.
2. Wireless Speed issue this issue only affects the device(s) connected via Wi-Fi which can easily be fix by doing adjustment to the modem/router's settings.
3. Speed issues caused by ongoing outage in your area.
I've managed to run remote test on your connection and have detected that your session is working for more than a month now which means the line is stable.
It's possible that the trouble you may be having could be WIFI-related (signal interference, distance, weak signal) if you're using a WIFI connection only.
We recommend having a read on the following articles:
Let us know how it will go.
I'm experiencing slow WiFi at home and has been for 3 days. Tried rebooting the modem and still the same problem