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omarmciver/Windows DPC Latency Fixes.md

Created January 21, 2025 04:26
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[Windows DPC Latency Fixes]
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Windows DPC Latency Fixes.md

Windows & NVIDIA DPC Latency Issues: Troubleshooting Steps

General Steps:

1. Disable Power Saving Features

  • Disable all power-saving features in BIOS/UEFI settings.
  • Set a high-performance power plan in Windows: 
    Right-click on 'Power' icon in taskbar > 'Choose what the power button does' > 'Change settings that are currently unavailable'
    Select High performance and click OK.

2. Adjust Processor Idle Settings

  • Download PowerSettingsExplorer: https://www.nirsoft.net/utils/power_settings_explorer.html
  • Run as administrator: 
    Right-click on 'PowerSettingsExplorer.exe' > 'Run as administrator'
  • Uncheck Processor Idle Demote Threshold and Processor Idle Promote Threshold.
  • Set both options to 100% in power plan settings: 
    Right-click on 'Power' icon in taskbar > Select your active power plan (e.g., High performance) > 'Change advanced power settings'

3. Use MSI Utility v3

  • Download MSI Utility v3: https://www.msi.com/Landing/uti/download/
  • Run as administrator: 
    Right-click on 'MSI Afterburner' > 'Run as administrator'
  • Set GPU to MSI Mode and priority to High.
  • Restart your computer and test for improved performance.

4. Uninstall Windows Update Health Tools

  • Open Command Prompt as administrator: 
    Right-click on 'Start' > 'Command Prompt (Admin)' or 'Windows PowerShell (Admin)'
  • Type the following command and press Enter: 
    dism /online /norestart /cleanup-image /startcomponentcleanup

5. Disable USB Selective Suspend

  • Disable USB selective suspend in your power plan settings: 
    Right-click on 'Power' icon in taskbar > Select your active power plan (e.g., High performance) > 'Change advanced power settings'
    Expand USB Settings, double-click USB selective suspend setting, and select Disabled. Click OK.

6. Update Motherboard Chipset Drivers

  • Visit your motherboard manufacturer's website to download the latest chipset drivers.
  • Install the downloaded drivers: 
    Double-click on '.exe' driver file > Follow installation instructions
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