Many people ditch the router supplied by the ISP, myself included. A few of the better providers will also fully support you (I’ve had no issues with either ABB or Leaptel, the latter has been excellent for me but YMMV). Caveat emptor if you use nbn Phone. TPG did work but was painful, I just recommend you keep the supplied router in case you need to do any troubleshooting on the link, it’s just easier. I use a UCG Fiber—it’s fantastic!