How to Clean Dolphin Emulator Cache & Temporary Files

How Compiled DirectX 12, Vulkan & Driver Pipelines Accumulate in Dolphin Emulator Cache & Temporary Files

Every time a modern DirectX 12, Vulkan, or OpenGL title launches, your graphics driver compiles hardware-specific Pipeline State Objects (PSOs) and compute shaders into binary cache buckets at %AppData%\Dolphin Emulator\cache, shaders, and logs. Across dozens of driver updates and game patches, shaders compiled for retired driver versions remain on disk alongside active pipelines—and corrupted shader buckets are a primary cause of micro-stutter and DXGI_ERROR_DEVICE_HUNG crashes.

When you clear Dolphin Emulator Cache & Temporary Files, the graphics driver automatically allocates a clean, defragmented shader cache directory on next launch and compiles only the active pipeline states required by your current driver version. Note that any files locked by the Desktop Window Manager (dwm.exe) or active tray overlays are safely skipped.

# Inspect current disk footprint of Dolphin Emulator Cache & Temporary Files (Read-Only)
$target = "$env:APPDATA\Dolphin Emulator\cache, shaders,"
Get-ChildItem -Path $target -Recurse -Force -ErrorAction SilentlyContinue |
  Measure-Object -Property Length -Sum |
  Select-Object Count, @{Name="SizeGB";Expression={[math]::Round($_.Sum / 1GB, 2)}}

Manual Cleaning Instructions

1. 1 Completely close Dolphin Emulator and verify no background helper processes remain active in Windows Task Manager.
2. 2 Press Windows Key + R, type %AppData%\Dolphin Emulator into the Run dialog, and press Enter.
3. 3 Open the Cache, Temp, or Logs subdirectories, select the cached files (Ctrl + A), and press Shift + Delete.
4. 4 Relaunch Dolphin Emulator (or use SWEEPR Cleaner to purge all Dolphin Emulator cache directories automatically in one click).

Note: If Windows alerts that a file is in use or locked by a background process, close the associated task in Task Manager before deleting, or use SWEEPR Cleaner to release locked handles safely.

Sub-Folders & Cache Locations Breakdown for Dolphin Emulator Cache & Temporary Files

Modern Windows applications and system services split their disk footprint across multiple sub-directories (`Cache_Data`, `Service Worker\CacheStorage`, `Code Cache`, `GPUCache`, and `Crashpad\reports`). Review which sub-folders inside Dolphin Emulator Cache & Temporary Files are safe to purge and which files remain protected:

Frequently Asked Questions

Manual File Explorer vs. 1-Click SWEEPR Cleanup

Related Windows Cleanup Guides & Hidden Space Hogs