Random Dropping Internet Connection and Slow Speeds with TPG nbn

bluespider on 11/05/2025 - 11:25
Last edited 12/05/2025 - 13:21 by 1 other user

Hi Guys,
Since day1 we are noticing random dropping internet connection and slow speeds at our new house.
I am with TPG NBN50 plan (50Mbps download / 17Mbps upload) with below setup:
.
- Double storey house
- Modem : TP-Link VX220-G2v (AX1500 Wireless Gigabit VoIP VDSL/ADSL Modem Router) https://www.tp-link.com/au/service-provider/xdsl/vx220-g2v/
- 3 mesh devices : TP-Link Deco M5 (AC1300 Whole Home Mesh Wi-Fi System) - 3 units. https://www.tp-link.com/au/home-networking/deco/deco-m5/v2/
- One deco is connected to the modem, other one is in farthest room on first floor and last one is on upstairs rumpus.
.
Observations so far:
- The room where we have modem setup, is always ok, rarely face any drop outs / slow connection
- Farthest on first floor (as modem) has one mesh device but speed is weak most of the time and drop outs as well (tested with 5g, 2.4g and mesh wifi networks)
- Rooms upstairs also have a mesh in common area but speed is weak most of the time and drop outs as well (tested with 5g, 2.4g and mesh wifi networks)
.
First thing I am thinking now is to change from TPG NBN50 plan to Spintel's Home Fast 100/20 Mbps.
Could you recommend if I should also change Modem or Mesh or there shouldn't be any issue with these models?
Appreciate any tips, thanks!

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Comments

  • Twix on 11/05/2025 - 11:42
    +3

    Changing ISP is the last thing to worry about. Your modem/router setup might be misconfigured.

    Do you have the TP-Link VX220-G2v modem Wi-Fi turned off?

    Check here for what type of nbn. Is it nbn FTTP, FTTC, FTTN, FTTB, HFC or fixed wireless?

    • bluespider on 12/05/2025 - 13:27

      @Twix @Gregmond @freefall101
      Thanks, please see my feedback below:
      .

      1) Do you have the TP-Link VX220-G2v modem Wi-Fi turned off?

      No, it shows ENABLED for both 5 and 2.4 GHz , please see this setting https://imgur.com/a/rKbwUK3
      .
      2) NBN Page shows : Available technology - nbn Hybrid Fibre Coaxial (HFC)
      .
      3) From Deco App, I see these : https://imgur.com/a/VG51ZDH
      .
      4) I did SpeedTest through laptop from https://www.speedtest.net/ and at time of tests results are:

      From the room where we have modem setup
      Mesh : Download 53.72Mbps / Upload 18.90 Mbps
      5GHz : Download 53.70Mbps / Upload 18.92 Mbps
      2.4GHz : Download 47.25Mbps / Upload 18.50 Mbps

      From the farthest room on first floor (as modem)
      Mesh : Download 28.32Mbps / Upload 11.80 Mbps
      5GHz : Download 44.90Mbps / Upload 16.12 Mbps
      2.4GHz : Download 13.24Mbps / Upload 08.24 Mbps

      Rumpus upstairs
      Mesh : Download 36.00Mbps / Upload 17.69 Mbps
      5GHz : Download 20.10Mbps / Upload 11.92 Mbps
      2.4GHz : Download 12.50Mbps / Upload 13.00 Mbps

      Room#1 upstairs
      Mesh : Download 38.40Mbps / Upload 17.00 Mbps
      5GHz : Network not detected
      2.4GHz : Network detected but cannot connect to the internet

      Room#2 upstairs
      Mesh : Download 35.50Mbps / Upload 18.50 Mbps
      5GHz : Download 53.00Mbps / Upload 18.02 Mbps
      2.4GHz : Download 19.00Mbps / Upload 17.12 Mbps

      Room#3 upstairs
      Mesh : Download 39.00Mbps / Upload 14.50 Mbps
      5GHz : Download 51.00Mbps / Upload 18.90 Mbps
      2.4GHz : Network not detected
      .
      .
      Please let me know if you have any further insights from these points…

      • Twix on 12/05/2025 - 13:29
        +1

        Thanks for that. You have a double NAT and this can cause dropouts.

        Do you use the TPG VoIP home phone?
        Are the internal walls brick, plaster or something else?

        • bluespider on 12/05/2025 - 13:36
          +1

          @Twix Thanks :)
          .
          You have a double NAT and this can cause dropouts.

          Sorry not technical on it, but is there anything I can update in setting to remove double NAT or I should leave the current setting as it it?

          Do you use the TPG VoIP home phone?

          Nopes

          Are the internal walls brick, plaster or something else?

          plaster / gyprock

          • Twix on 12/05/2025 - 13:38
            +1

            @bluespider: All good. Yeah you need to remove the TP-Link VX220-G2v modem from the setup. The nbn NTD box is your HFC modem.

            I will send you instructions on how to setup the Deco M5 router with the nbn NTD box soon. Hopefully it fixes your problem.

            • bluespider on 12/05/2025 - 13:43

              @Twix: Thanks a lot @Twix, much appreciate.

              I can setup the Deco router with the HFC NTD with your next steps with TP-Link VX220-G2v modem for now, right? OR do you mean I should buy new modem first and then follow your setup instructions?
              Reason for asking I might take sometime to buy new modem, do you recommend any good options around $200 mark or I need to spend bit more say till $300? Just wondering :)

              • Twix on 12/05/2025 - 13:51

                @bluespider: You will plug the Deco M5 router to the nbn NTD box. You don't need to purchase an extra modem for nbn HFC.

                Replacing all three Deco M5 devices with a new Deco router mesh setup is an option. Don't worry about this for now.

                By the way your TPG 50/20 speeds are normal. This is a router and Wi-Fi setup problem.

              • Twix on 12/05/2025 - 14:55

                @bluespider:

                1. Unplug the TP-Link VX220-G2v modem from the nbn NTD box.
                2. Wait at least 30 minutes (don't skip this step).
                3. Press the reset button underneath the Deco for a couple seconds.
                4. Plug in one TP-Link Deco to the nbn NTD box.
                5. Enable Bluetooth on your phone.
                6. Delete the TP-Link Deco app.
                7. Reinstall the TP-Link Deco app from Apple App Store or Google Play Store.
                8. Login to your TP-Link account.
                9. Wait for the LEDs on the TP-Link Deco to go blue. This can take a couple minutes.
                10. When the TP-Link Deco app asks for your Internet Connection Type select PPPoE.
                11. Type in TPG account username bluespider@tpg.com.au or whatever your TPG username is.
                12. Type in TPG account password.
                13. Save changes.

                You should now be online. If you don't get a working connection follow these steps.

                Go back to the Deco app, More, Advanced, VLAN, Turn on VLAN, Change the Mode to Custom, Turn on Internet VLAN and 802.1Q Tag.
                Change the Internet VID ID to number 2 and Internet VLAN ID to number 0 and save changes.

                Changing to Buddy Telco, Leaptel or Superloop allows you to select Dynamic IP for the Deco's Internet Connection Type. There is no stuffing around with ISP provided usernames, passwords and VLAN ID numbers.

                You may need to move the Deco from the far room and bring it closer in.

                After this is all done check if your speeds improve and dropouts stop happening.

                • bluespider on 12/05/2025 - 16:39
                  +1

                  @Twix: Thanks so much @Twix I will test these steps in couple of hours and keep you posted.

                • bluespider on 12/05/2025 - 23:35

                  @Twix: @Twix I just realized I cannot remove the TP-Link VX220-G2v modem from the setup as it has the Hills Home Hub Setup with network cables providing connections to other rooms (with data point). Please check this image : https://imgur.com/a/jMBccnz
                  So in this case, what do you recommend?

                  • Twix on 12/05/2025 - 23:45

                    @bluespider: Option 1: Keep the TP-Link VX220-G2v and turn off it's Wi-Fi signal. Configure the Deco's as your wireless access point.

                    Option 2: Plug in one TP-Link Deco to the nbn NTD box. Plug in a TP-Link 5 port switch to the TP-Link Deco. Plug in the three ethernet cables from the TP-Link switch to the Hills Hub.

                    What do you want to do?

                    You might need to move the Deco out of that enclosure if it's metal and you still get dropouts after making the changes.

  • Gregmond on 11/05/2025 - 11:54
    +5

    Observations so far:
    - The room where we have modem setup, is always ok, rarely face any drop outs / slow connection

    If the link isn't going down, then your issue is with your mesh devices and the config. As Twix said, changing ISP's is the last thing to help.

    When you run a speed test on a device connected to the router are you getting 50mbs?

    Doesn't sound like the ISP is the issue.

  • freefall101 on 11/05/2025 - 12:28
    +1

    Sounds like your devices aren’t connecting to the right mesh node (make sure they’re not connecting to the modem instead or something) or potentially the nodes are too far apart on the mesh network.

    Do you have the deco app installed? That will tell you what the signal strength is like between nodes on the mesh network and how many devices are connected to each one.

  • bmizzi on 11/05/2025 - 12:39
    +1

    I’ve had a similar experience with Tangerine and TP-Link, it was definitely modem related as I switched to an older modem I had and it connected fine.
    Still haven’t figured out why but the internet would be great during the day but at peak times it would go haywire and fall in and out of connection. Very frustrating!

    • BigBirdy on 11/05/2025 - 12:57

      The room where we have modem setup, is always ok

    • Love a bargain on 12/05/2025 - 08:53

      The time of day observation could be ISP/ network related, or due to greater interference from other networks nearby (esp if you are in an apartment).

  • bluespider on 12/05/2025 - 13:29

    Thanks everyone for your help.
    Let me add some extra info here based on above inputs.
    .

    1) Looking at TP-Link VX220-G2v modem Wi-Fi setting - it shows ENABLED for both 5 and 2.4 GHz , please see this setting https://imgur.com/a/rKbwUK3
    .
    2) NBN Page shows : Available technology - nbn Hybrid Fibre Coaxial (HFC)
    .
    3) From Deco App, I see these : https://imgur.com/a/VG51ZDH
    .
    4) I did SpeedTest through laptop from https://www.speedtest.net/ and at time of tests results are:

    From the room where we have modem setup
    Mesh : Download 53.72Mbps / Upload 18.90 Mbps
    5GHz : Download 53.70Mbps / Upload 18.92 Mbps
    2.4GHz : Download 47.25Mbps / Upload 18.50 Mbps

    From the farthest room on first floor (as modem)
    Mesh : Download 28.32Mbps / Upload 11.80 Mbps
    5GHz : Download 44.90Mbps / Upload 16.12 Mbps
    2.4GHz : Download 13.24Mbps / Upload 08.24 Mbps

    Rumpus upstairs
    Mesh : Download 36.00Mbps / Upload 17.69 Mbps
    5GHz : Download 20.10Mbps / Upload 11.92 Mbps
    2.4GHz : Download 12.50Mbps / Upload 13.00 Mbps

    Room#1 upstairs
    Mesh : Download 38.40Mbps / Upload 17.00 Mbps
    5GHz : Network not detected
    2.4GHz : Network detected but cannot connect to the internet

    Room#2 upstairs
    Mesh : Download 35.50Mbps / Upload 18.50 Mbps
    5GHz : Download 53.00Mbps / Upload 18.02 Mbps
    2.4GHz : Download 19.00Mbps / Upload 17.12 Mbps

    Room#3 upstairs
    Mesh : Download 39.00Mbps / Upload 14.50 Mbps
    5GHz : Download 51.00Mbps / Upload 18.90 Mbps
    2.4GHz : Network not detected
    .
    .
    Please let me know if you have any further insights from these points…

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