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Discussion in 'Asuswrt-Merlin' started by trameltanz, Dec 2, 2019.

  1. trameltanz

    trameltanz Occasional Visitor

    Jun 12, 2018
    I have an Asus RT-AC88U router with a Netgear CM1150V cable modem.

    The Router is running 384.13 Merlin - I am concerned only with WIRED connections at this time. All devices have their latest OS and Driver updates.

    I am paying for 500+ download with Comcast/xFinity

    When my PC is connected (wired) to the modem speed tests show 500+mb/s download. When the PC is connected to the router's LAN I am getting 300mb/s download.

    All devices, phones, tablets, PCs, wired, wireless, etc...all behave the same way as far as download speed.

    I did some google-ing and found out that the WAN port in the AC88U usually pegs out above 800mb/s.

    Right now I am using cat5e cables for everything.

    I have tried both Asus stock firmware and Merlin's and they both behave exactly the same.

    I have turned off AiProtection, QoS, traffic analyzer, and NAT Acceleration.

    Asus GUI says that the WAN port is connected 1GB and all LAN ports are connected 1GB.

    1. Will a Cat6/7 patch cable improve performance from the WAN port on the router to the Uplink on the Cable Modem?

    2. Is there a limitation in the firmware for the WAN port in the Router?

    3. Am I missing any configs for the Asus Router?

    Any help is appreciated! Thank you!
  2. ColinTaylor

    ColinTaylor Part of the Furniture

    Mar 31, 2014
    NAT Acceleration needs to be active otherwise you will see those speeds.
  3. trameltanz

    trameltanz Occasional Visitor

    Jun 12, 2018
    I have tried NAT Acceleration both ON and OFF

    This setting has never made a difference in speed....until now!

    Well, sure as there is ice in my freezer I am not getting about 450mb/s down
    ColinTaylor likes this.
  4. Val D.

    Val D. Very Senior Member

    Jun 16, 2019
    Because you had AiProtection, QoS, Traffic Analyzer, etc. ON before. All of them require CPU traffic processing.