\\tsclient access incredibly slow on Windows Server 2012 R2

Discussion in 'Windows Server' started by nickles, Dec 28, 2015.

  1. nickles

    nickles MDL Novice

    Jul 27, 2011
    #1 nickles, Dec 28, 2015
    Last edited: Dec 28, 2015
    Compared to Windows Server 2008 R2, \\tsclient access on our Windows Server 2012 R2 servers is incredibly slow (e.g. starting gvim from a local path takes ~80 secs compared to ~3 secs normally).

    Things I tried:

    1) Used only TCP for RDP connections (server and client setting)
    2) Turned off all offloading settings (Registry and/or NICs)
    3) Connected from Windows 10 instead of Windows 7 (with RDP 6.3.9600)
    4) Made sure Microsoft's Security Baseline is off (FIPS)
    5) Swapped G200/MS display drivers
    6) Tried all reasonable other client settings
    7) Contacted Dell (system is up to date)
    8) Contacted MS's "Professional" Support (don't make me talk about that...:mad:)

    Note: The Windows Server 2012 R2 server uses the same HW as a previously installed Windows Server 2008 R2.

    Note: The server's update history shows update 3003743; wusa tells me it's not currently installed. So I guess there's another update superseeding 3003743 (whose number I don't know); would like to uninstall the successor for a test.

    Note: The same behavior is prevalent when the machine is running as a VM in VMware ESXi 5.5 (just somewhat slower still).

    Note: No termsrv.dll patches/loaders are used.

    Note: All our Windows Server 2012 R2 servers expose this behavior.

    Any ideas are highly appreciated! :(