Are you getting slower NBN speeds than you expected? It could be a 30 second fix.
When logging into the modem settings (eg go to your internet browser and type in 192.168.1.1 or 10.1.1.1 If you get a login screen, login with the default admin login and admin password), there is a section called bandwidth control. In our case the upload speed was set at 970kbps! Unticking the bandwidth control and then running the speed test resulted in the upload speed changing to 20Mbps! If you haven't gotten on to check this, you might want to do this now!