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  • Slow Word and Excel file opening on flexshare (SMB3)

    Hi

    We have a shared drive on our v7.x server.

    Word and Excel files (only!) open very slow on Windows 10 Pro machines with Office 2016 Pro. For example it takes ~20 seconds to open 55kb Word .docx file.
    Other file types open very fast e.g. opening 10MB PDF file takes max 2 seconds; copying files is also very fast. We have SMBv1 support disabled; Win10 client have SMBv1 support disabled too. Share is mapped to a fast Samsung SSD drive.

    Also, we have a 'webdav' based share hosted by another, non-ClearOS machine and opening Word and Excel files takes even longer e.g. 90-120 seconds to open simple Word .docx file.

    We think that both issues are caused by Windows 10 or Office 2016 update.

    So far we have tried:


    • enabling NetBIOS over TCP/IP
    • regedit:

    • HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters
      add
      DirectoryCacheLifetime: Dword=0
      FileInfoCacheLifetime: Dword=0
      FileNotFoundCacheLifetime: Dword=0
      Then reboot - no changes.
    • disabling AV - in our case ESET Endpoint Security - no changes


    Has anyone had similar problems? What might be causing it?