WAN speed drops significantly when downloading large 10+ GB files!?



  • Hi everybody,

    Using pfSense for 3 weeks now. Thanks to you guys I am finding my way through the interface. From what I have experienced pfSense is an outstanding firewall.

    Now to the question. My WAN speed is a 400/40 cable connection. PfSense is running as a Hyper-V virtual machine. The VM has one virtual LAN network card and of course a virtual WAN network card. The physical network card is an Intel(R) Ethernet Server Adapter I350-T4. The Hyper-V role is running on a Windows Server 2016 environment. So far so good. So far I know everything is working well.

    I also download large files from UseNet pay servers. When I do so suddenly the WAN speed drops from approximately 50MB to a very inconsistent speed between 0 MB and 40 MB. Note the picture below to see the problem visualized.

    0_1533655085726_5e08e39e-7325-460d-b9aa-bfd9192f138f-image.png

    What can be the cause of this issue? Somebody having thoughts how to solve this and get a stable fast download speed?

    Appreciate your help,

    Regards,
    Herman


 

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