For customers experiencing any issues with their NBN service, we recommend the best thing to do first is check if there's an outage on the NBN network.
We have created this article that can guide you on How to Check for NBN Network Outage
If there are no known outages in your area, customers can proceed with the troubleshooting steps indicated on this link : https://www.tpg.com.au/support/nbn-fttc/problems_connect_internet_nbn_fttc
In your case, the connection shows stable and we are not detecting any fault on the line or network that may affect its performance at the moment.
Further investigation may be required to identify what is really dropping out as it could be the Wireless connection, if you're connecting all your devices via Wi-Fi.
Wireless dropout can be eliminated by using a wired connection. You can connect a computer directly to the router via ethernet cable and if the connection will not drop on a wired device, it is likely a wireless drop outs issue.
We'd recommend having a read of this community article which may help improve the wireless connectivity performance : Easy Steps to Improve Wi-Fi Connection In Your Home