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Hi @woja1113,
Welcome to TPG Community!
We were able to locate your account using your community details and tested the line, but weren't able to detect any fault within the NBN network.
The result shows that the connection has been stable with a good sync speed. If you are using a WiFi connection, then you are experiencing some signal interference which caused by the uncontrollable frequency.
In order to improve your home network, we've created an article that will guide you with some easy steps. You may refer to this link.
If you are experiencing a slow speed issue, we have an available article that will give you some tips on how to resolve it. Visit this link.
Regards,
BasilDV