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Thread: Upload Speed Problems

  1. #1

    Upload Speed Problems

    Just to preface all of this, this problem is only affecting one computer on my network, and the problem has only started yesterday.

    My advertised speeds are 40mbitup/down, and I've been getting that until I installed a program called cFosSpeed to tweak some ping settings. After installing this program, my upload speed drastically fell (anywhere from 0.50mbit to 7mbit). My download remains stable at 40mbit/s.

    I uninstalled the program immediately, rebooted, and was still greeted with the same slow speeds.

    I ran TCP Optimizer, applied Optimal settings, rebooted, and got no better results.

    I even tried uninstalling my anti-virus to see if that would fix it; no go.

    My on-board network card is Atheros AR8151 PCI-E Gigabit Ethernet Controller (NDIS 6.20), if that helps.

    Here are my Analyzer results: TCP Analyzer Results
    Tested on: 2012.04.24 12:52
    IP address:
    Client OS/browser: Windows 7 (Firefox 11.0)

    TCP options string: 020405b40103030201010402
    MSS: 1460
    MTU: 1500
    TCP Window: 65700 (multiple of MSS)
    RWIN Scaling: 2 bits (2^2=4)
    Unscaled RWIN : 16425
    Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
    BDP limit (200ms): 2628kbps (329KBytes/s)
    BDP limit (500ms): 1051kbps (131KBytes/s)
    MTU Discovery: ON
    TTL: 49
    Timestamps: OFF
    SACKs: ON
    IP ToS: 00000000 (0)

    Any help with this would be greatly appreciated, as I'm not sure how to remedy this at all.

  2. #2
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