Why is my NBN so slow? Try these quick fixes

We’ve found four common issues that might be slowing down your NBN and how you can fix them to get things running faster.

Is your NBN connection plodding along like a Galapagos turtle? The solution could be as simple as replacing faulty equipment.

Reason #1: Equipment and signal issues

Cheap and faulty hardware can often affect your connection speed in a bad way. Anything along the NBN chain from your modem to the phone in your hand could be causing an issue in the connection.

You can fix it by:

  • Checking your modem. If you got your modem from your provider as part of your plan, it's probably fine. If not, check that your modem is up-to-date enough to handle a fast NBN connection. If you're using an old modem, it could be inadvertently throttling your speeds, and it might need an upgrade. There's also a small chance that your modem is faulty and simply needs replacement.

  • Testing your Wi-Fi. Hook up your device to an ethernet cable and run an internet speed test. If your internet connection is significantly faster, either your Wi-Fi is getting interference or your modem's antenna isn't strong enough.

  • Running speed tests. Run a connection test on several different devices to confirm that it isn't just your phone or laptop that's the problem. If one device is slower, you may need a new one, or you might need to run a virus scan.
    Check how fast your connection is with Finder's Internet Speed Test

Reason #2: Network congestion

When lots of people hop online in the evening, the additional load on the network causes everyone's connection to slow down, despite the NBN being built for high traffic.

A possible fix can be as simple as switching broadband providers.

If congestion is your only problem, this is the easiest solution. Different network providers promise different typical evening speeds, which are the speeds you'll likely get between 7pm and 11pm when everyone's online.

Picking a provider with a higher typical evening speed means congestion shouldn't mess with your connection as much.

Compare NBN plans

Reason #3: Low speed tier

Last but not least, you might be getting a slow connection purely because you're on the wrong NBN speed tier. If your internet is crawling, you might even be on a NBN 12 Basic I plan, which is hardly faster than what you would get on an older ADSL2+ connection.

It could also be the case that you simply have too many people accessing the connection at once, making it crawl for everyone.

The easiest fix is to just upgrade to a higher speed tier. A great default option is an NBN 50 plan, which can support a household of 2-3 medium/heavy internet users at a decent rate.

Check out our guide on the different NBN speed tiers and how to select the best speed for you.

Is your internet connection unreliable?

23% of people rarely get buffering, according to our consumer sentiment tracker but 18% say it happens weekly. A further 14% report daily buffering.

Reason #4: Distance from the node

If you're on a Fibre to the Node (FTTN) NBN connection, the speed you get is heavily dependent on how far away that node is.

Signals degrade in old copper wires the further they have to travel, and being at the end of the line can give you a significantly slower connection than someone who's right next to it.

Even a few hundred metres can have a huge impact.

This means that you might have a slower connection than you were promised, simply due to bad luck in your physical location.

Sadly, there's no physical way to improve the quality or capabilities of your connection, since this is a limitation of the NBN installation.

Fix this problem by signing up for home wireless broadband, which uses the same network as a mobile phone.

Richard Whitten's headshot

"I only have to reboot my modem once or twice a year when it slows down or stops working. I also repositioned my modem carefully so it was higher up to get a clearer Wi-Fi signal. It seemed to help with the speed. But then while looking at my internet connection on the NBN checker I discovered I was eligible for an upgrade from Fibre to the Curb to blazing fast Fibre to the Premises. That's a huge speed boost."

Money Editor

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Writer

Sam Baran is a writer for Finder, covering topics across the tech, telco and utilities sectors. They enjoy decrypting technical jargon and helping people compare complex products easily. When they aren't writing, you'll find Sam's head buried in a book or working on their latest short story. Sam has a Bachelor of Advanced Science from the University of Sydney. See full bio

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Co-written by

Senior Utilities Editor & Tech Expert

Mariam Gabaji is a journalist with 13 years of experience, specialising in consumer topics like mobile services and energy costs. Her work appears in the ABC, Yahoo Finance, 9News, The Guardian, SBS, 7News, A Current Affair and Money Magazine. Mariam holds a Bachelor of Arts in Journalism and was a finalist for the 2024 IT Journalism Award for Best Telecommunications Journalist. See full bio

Mariam's expertise
Mariam has written 338 Finder guides across topics including:
  • Energy
  • Mobile
  • Broadband
  • Consumer tech

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    HaiMay 3, 2020

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