Thanks for the additional details. Feel free to check this thread and see if this will help improve your wireless connection.
Easy Steps to Improve Wi-Fi Connection In Your Home
Let me know how it will go.
Thanks for the details @chatswood,
I'd like to arrange a call from one of our Technicians for further test and investigation.
Let me know your best contact time and I will use the contact number associated with your account.
Hi @chatswood, NBN Co. has advised us that they are currently performing a network capacity work. This activity is being performed to optimise the serviceability and performance of the Fibre to the Node Network.
We're sorry to know that you are unable to receive a callback and we'll make sure to take care of this matter internally.
We also apologise for the inconvenience this issue is causing you. As advised, this network improvement is scheduled to be completed today at 20:00 AEDT.
Please check the connection after 8PM AEDT and if the issue persists, please let us know so we can investigate further.