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RT-AX88U Setup Help Please

Discussion in 'ASUS AX Routers & Adapters' started by Col8eral, Apr 7, 2020.

  1. Col8eral

    Col8eral Regular Contributor

    Joined:
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    I had a RT-AC88U that died recently. Just replaced it with a RT-AX88U.

    I have a broadband connection of at 200mbs

    When I connect laptop via ethernet to the AX88U I get the full 200mbs

    When using mobile phone via 5Ghz WiFi I get 60mbs even in the same room as the router. The same phone connected to my old AC88U I got the full 200mbs.

    The AX88U has he latest ASUS firmware but all other settings are at their default settings. Having said that all the settings on my old AC88U were default.

    Can anyone advise why the wifi performance on the new unit might be poor compared to the old one. Are their some settings you would advise I change so I can get the full 200mbs.

    Many thanks in advance.
     
  2. L&LD

    L&LD Part of the Furniture

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    Consider using a new, never before used SSID. Or, test with either a Guest network or reset the client device (to forget the old network name), reboot it and then re-associate it again with the new router.

    I would also suggest the defaults of the M&M Config guide in the link in my signature below.
     
  3. dosborne

    dosborne Very Senior Member

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    You may want to share what your wifi settings are too.
     
  4. sanke1

    sanke1 Senior Member

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    I hope you are using separate SSIDs for 2.4 Ghz and 5 Ghz networks. Number 1 source for all wifi speed complaints.

    Make sure you are using Channel 40 for 5Ghz Wifi. Enable AX and also enable 160 Channel Bandwidth. Rest of the settings to their defaults.
    Leave the Professional Tab settings to their default as well... the way they are after factory reset.
     
  5. Col8eral

    Col8eral Regular Contributor

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    I have tried forgetting network on the client devices and then re-connecting but no joy.

    Both the networks are separated into two SSIDs

    I have enabled 160 channel bandwidth

    How do I share my settings? Is that a screen shot or can I download them somehow?
     
    Last edited: Apr 8, 2020
  6. sanke1

    sanke1 Senior Member

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    Here are my settings. Rest all the settings are default under Professional Tab

    [​IMG]

    I am having zero wifi issues. My internet is 100 Mbps and I consistently get that speed on all my wireless devices.
     
  7. swejuggalo

    swejuggalo Regular Contributor

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    Have you checked the link speed you get between router and phone? 192, 866, something in between or worse? Tried manual channels instead of Auto on 5Ghz?
     
  8. Val D.

    Val D. Very Senior Member

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    What?
     
  9. Col8eral

    Col8eral Regular Contributor

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    Been playing around with wireless settings and have seen some good improvement. Seems like I live in a busy WiFi area and lots of potential for interference.

    • Disabled universal beam forming
    • Disabled airtime fairness
    • Disabled mu Mimo
    • Set preamble type to short
    • Changed the control channels to manual
    • Set 160 for 5ghz
    For 2.4ghz and 5ghz this resulted in almost a trebbling of speed. I have a 200mbs broadband service and now at furthest distance from the router over WiFi I get 180mbs for 5ghz and 30mbs for 2.4ghz.

    I'd like to get the 2.4ghz performance a bit better. Any thoughts?
     
  10. Val D.

    Val D. Very Senior Member

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    How many 160MHz channel capable devices do you have?
     
  11. Col8eral

    Col8eral Regular Contributor

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    Only one
     
  12. Val D.

    Val D. Very Senior Member

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    What device and what it is used for?
    Your full 200Mbps ISP speed is reachable with a simple 1x1 AC client on 80MHz channel.
     
    L&LD likes this.
  13. Col8eral

    Col8eral Regular Contributor

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    I have a work laptop with an m.2 adapter. Only used for basic emails and growing though. Nothing strenuous.
     
  14. Val D.

    Val D. Very Senior Member

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    You don't need to occupy the entire WiFi spectrum with 160MHz channel then. 80MHz wide on the best throughput control channel in your area is more than enough for your needs.
     
  15. Col8eral

    Col8eral Regular Contributor

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    I changed to 80mhz only and I say to say it's a little faster. Thank you.

    Any thoughts on improving 2.4ghz
     
  16. Val D.

    Val D. Very Senior Member

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    Your options are limited there. Some RT-AX88U users report 2.4GHz signal level reduction with newer firmwares, actually. Stick to 20MHz channel, disable all Roaming Assistant, Airtime Fairness, MU-MIMO, Beamforming, TX Bursting... and hope for the best. In urban areas 2.4GHz band is usually overcrowded and if you can push steady ~30Mbps it's already a good achievement.
     
  17. Col8eral

    Col8eral Regular Contributor

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    Thanks. Seems like I'm doing ok then