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  1. #1
    Newbie
    Join Date
    May 2018
    Posts
    8

    Default Tunnel VPN - Diagnosing slow download

    Hello all!

    I've ran into a rather serious performance drop with Tunnel VPN, and I'd like some advice on diagnosing the issue.

    VPN: TorGuard
    Connection Speed: 100/10
    VPN Speed using VPN on PC: 85/10 (Using UDP)
    VPN Speed using Tunnel VPN: 15/10 (Using UDP)

    CPU: Intel Atom D525
    RAM: 4GB
    NIC: HP NC360T (Intel 82571EB)

    - I get the same speed on the two closest VPN servers (~360 miles for both)

    - CPU utilization during a speed test stays under 1%.

    - TCP results in a very slight decrease in download speed

    - I've tested both the TorGuard app and Open VPN on my PC, both have speeds over of 80/10.

    - QoS is not enabled. Ad Blocker, Firewall, Reports, OpenVPN and Tunnel VPN are the only apps enabled.

    The Atom D525 unfortunately doesn't support AES-NI, but would it really make this big of an impact on performance?

  2. #2
    Untangler jcoffin's Avatar
    Join Date
    Aug 2008
    Location
    Sunnyvale, CA
    Posts
    6,967

    Default

    What unit are you using in the numbers above? They seem to be a mix of MBps and Mbps Is that tested or ISP provided numbers? Use the download test in /admin/index.do#config/network/troubleshooting/download .

    All VPN providers will limit bandwidth base on the demand. If QoS is disabled, then the speed is limited upstream. In testing Atom processor can do ~320 Mbps on OpenVPN.
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  3. #3
    Newbie
    Join Date
    May 2018
    Posts
    8

    Default

    The units are megabits. I'm using Speedtest.net, but the speed test in Untangle reports the same. I've tested both VPN and Non-VPN connections multiple times on Speedtest.net.

  4. #4
    Newbie
    Join Date
    May 2018
    Posts
    8

    Default

    I just tested Nord VPN. I also get a significant slow down with that. VPN on PC was around 14/6, VPN on Untangle was around 4/4. No VPN was 100/10. All tested using Speedtest.net.

  5. #5
    Untangle Ninja sky-knight's Avatar
    Join Date
    Apr 2008
    Location
    Phoenix, AZ
    Posts
    22,509

    Default

    And speedtest.net is hilariously inaccurate... But it should give you a general idea of what to expect.
    Last edited by sky-knight; 08-04-2018 at 03:41 PM.
    Rob Sandling, BS:SWE, MCP
    NexgenAppliances.com
    Phone: 866-794-8879 x201
    Email: support@nexgenappliances.com

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