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Thread: UDP Packet.Win10.RegistryLocation

  1. #1
    Junior Member
    Join Date
    Mar 2012

    UDP Packet.Win10.RegistryLocation

    Hey there. Was recently reading the Advanced Tweaks section and I came across the UDP Packet size section and decided to take a look in the registry (windows 10 latest as of Jan 18') and I didn't find the registry location listed on the Advanced Tweaks UDP section; HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters. Is this not used in Windows 10? Or has the location changed? Also, what does FastSendDatagramThreashold, & FastCopyReceiveThreshold do? Does it reduce latency? Does it benefit gaming? Do either the UDP or the Threshold settings help reduce latency, or increase granularity? Thanks!

  2. #2
    Administrator Philip's Avatar
    Join Date
    May 1999
    Jacksonville, Florida, United States
    Blog Entries
    Windows 10 does not use many of those registry settings. What is still being used is in the "Windows 10 TCP/IP Tweaks" article:

    For gaming, you can look at the "Gaming Tweaks" and the "LAN Tweaks" articles here:

  3. #3
    Just copy this in a Batch and Run it, its include everything from Speedguide Optimization what is not included by the TCP Optimizer:

    @echo off
    REM Network Throttling Index Gaming Tweak
    REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile" /v NetworkThrottlingIndex /t REG_DWORD /d 4294967295 /f
    REM System Responsiveness Gaming Tweak
    REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile" /v SystemResponsiveness /t REG_DWORD /d 00000010 /f
    REM Turn off LargeSystemCache ( Default: 0 Win10 1803 )
    REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v LargeSystemCache /t REG_DWORD /d 00000000 /f
    REM Disable Game Bar and Game Mode and Xbox DVR under Windows 10
    REM Game Bar
    REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\xbgm" /v Start /t REG_DWORD /d 00000004 /f
    REM Game Mode
    REG ADD "HKEY_CURRENT_USER\Software\Microsoft\GameBar" /v AllowAutoGameMode /t REG_DWORD /d 00000000 /f
    REM Xbox DVR 
    REG ADD "HKEY_CURRENT_USER\System\GameConfigStore" /v GameDVR_Enabled /t REG_DWORD /d 00000000 /f
    REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\" /v AllowGameDVR /t REG_DWORD /d 00000000 /f
    REM MMCSS(Multimedia Class Scheduler) Tweak
    REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "Scheduling Category" /t REG_SZ /d "High" /f
    REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "SFIO Priority" /t REG_SZ /d "High" /f
    REM ECN Capability
    netsh int tcp set global ecncapability=enabled
    REM Disable Receive Segment Coalescing State (RSC) & Disable Large Send Offload (LSO) & PacketCoalescing under Windows 10
    powershell.exe Set-NetOffloadGlobalSetting -PacketCoalescingFilter Disabled -ReceiveSegmentCoalescing Disabled
    REM Disable Large Send Offload (LSO) under Adapter
    powershell.exe Disable-NetAdapterLso -Name *
    REM Enable Checksum Offload under Adapter
    powershell.exe Enable-NetAdapterChecksumOffload -Name * -IpIPv4 -TcpIPv4 -TcpIPv6 -UdpIPv4 -UdpIPv6

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