We were able to locate your account using your community details and tested the line, but can't detect any fault. The modem also shows that it is getting a good connection speed from the NBN network.
The WiFi connection is prone to signal interference. To eliminate or narrow down the issue, please test the speed via Wired. We've also created an article that will help you troubleshoot a slow speed issue. Refer to this link.
There are articles that will help you improve your home WiFi network. Refer to these links:
