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Asus ROG GT-AC5300 extremely slow on 2.4GHz

Discussion in 'ASUS AC Routers & Adapters' started by h10dinh, Jul 17, 2019.

  1. h10dinh

    h10dinh New Around Here

    Jul 17, 2019

    New poster here. I was a proud owner of Asus RT-AC68U for several years until it died on me recently. I went to Amazon and bought a "Used-like new" Asus ROG GT-AC5300. Unit came and it looks new with an open box. I hooked it up and went through configuration. Out of the box, 2.4GHz was extremely slow and unreliable. I test it with a laptop within 5 feet from the router and the Speed test gave me 15Mbps/2.5 Mbps on my 100/10Mbpz Internet plan., while the other two bands show 130Mbps/10Mbps speed. Tested upstairs is worse, 2.4Ghz show 4.3 Mbps/1.2 Mbps and 5Ghz bands shows consistenly 126/10 Mbps.
    I tried to change the channel for the 2.4Ghz band to 1,6,11 as recommended but not much different. Channel 4, is better 5.6/1.5 Mbps from upstairs.
    Upgrade to the latest firmware did not help. I ran Wifi analyzer and do not see any band/channel utlization issue (I live in the wood, several hundreds feet from the next house).
    Obviously this is worse than the old RT-68U that I had before, except the 5GHz is about 130% better.
    Is this a defintely a hardware issue? I do not use much 2.4GHz band except some IP cameras around the house, but it bothers me that i should expect much better coverage and signal, speed with a top-of-the-line router on the market.
    Should I return it? Maybe i will try the Tp-link AC5400, heard that the range is really good.
  2. OzarkEdge

    OzarkEdge Very Senior Member

    Feb 14, 2018
    Be sure to install/re-install the latest firmware and factory default reset the router before configuration. Then if the WiFi doesn't work right out of the box, I would assume its defective and exchange it.