How to Clean DaVinci Resolve Fusion Composition Cache & LUTs
Location & Quick Verdict
%LocalAppData%\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache
DaVinci Resolve Fusion generates intermediate composite frames, node preview caches, and 3D LUT buffers when compositing visual effects.
How Windows Manages DaVinci Resolve Fusion Composition Cache & LUTs on NTFS & NVMe Drives
Windows 10 and Windows 11 maintain hidden system directories and root-level allocation files at %LocalAppData%\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache to handle shell thumbnail databases, prefetcher launch traces, hibernation power states, and user-profile scratch storage. Because many of these paths are marked with +H (Hidden) or +S (System) attributes or guarded by SYSTEM ACL permissions, standard folder size scans often miss them entirely.
Over time, orphaned temporary files, stale Explorer DataCache_* buckets, and uncompacted virtual storage allocations inside %LocalAppData%\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache lock up 5.0 GB – 35.0 GB of primary C: drive space. Cleaning DaVinci Resolve Fusion Composition Cache & LUTs using the proper administrative method restores drive headroom safely.
# Inspect current disk footprint of DaVinci Resolve Fusion Composition Cache & LUTs (Read-Only)
$target = "$env:LOCALAPPDATA\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache"
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 Open DaVinci Resolve Fusion page.
- 2 Go to Fusion > Fusion Settings > Cache and click Purge.
- 3 Or delete %LocalAppData%\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache.
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 DaVinci Resolve Fusion Composition Cache & LUTs
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 DaVinci Resolve Fusion Composition Cache & LUTs are safe to purge and which files remain protected:
| Sub-Folder / Cache Location | Storage Role | Typical Footprint | Deletion Safety |
|---|---|---|---|
| %LocalAppData%\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache | Primary System Scratch, Thumbnail/Icon DB or Virtual Allocation | 5.0 GB – 35.0 GB | 🟢 100% Safe (Unlocked Files) |
| %LocalAppData%\Temp & C:\Windows\Temp | Orphaned Installer Extraction & Session Scratch Files | 1.5 GB – 18.0 GB | 🟢 100% Safe |
| %LocalAppData%\Microsoft\Windows\Explorer (thumbcache_*.db) | Cached File Explorer Image & Video Thumbnail Databases | 250 MB – 3.0 GB | 🟢 100% Safe (Rebuilds Automatically) |
| User Documents, Desktop & Registry Hives | Personal Files, Boot Configuration & System Certificates | Protected | 🔒 Protected — Never Touched |
Frequently Asked Questions
Is it safe to delete DaVinci Resolve Fusion Composition Cache & LUTs?
Yes, 100% safe. Safe to delete. Reclaims gigabytes of disk space; Fusion automatically re-renders node branches upon playback.
How much storage space will cleaning DaVinci Resolve Fusion Composition Cache & LUTs free up?
Users typically reclaim 5.0 GB – 35.0 GB on Windows 10 and Windows 11 systems depending on update frequency and active cache retention in %LocalAppData%\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache.
Why does Windows say some files in DaVinci Resolve Fusion Composition Cache & LUTs are "In Use" when I try to delete them?
Active background processes (such as explorer.exe, svchost.exe, or running desktop apps) hold open file handles to current session scratch files. Skipping locked files—or letting SWEEPR Cleaner clean unlocked items automatically—is normal and completely safe.
Where is DaVinci Resolve Fusion Composition Cache & LUTs located on Windows 10 and Windows 11?
It is stored at %LocalAppData%\Blackmagic Design\DaVinci Resolve\Support\Fusion\Cache. You can paste that path directly into the Windows Run dialog (Win + R) or File Explorer address bar to inspect it.
Manual File Explorer vs. 1-Click SWEEPR Cleanup
| Feature | Manual Deletion | SWEEPR Cleaner |
|---|---|---|
| Locked File Handling | Fails on locked processes | Safe background release |
| Accidental Deletion Risk | Moderate (easy to delete wrong folder) | Zero (strict rules & hashes) |
| Safety Undo Rollback | None (Shift+Del is permanent) | 7-Day Automatic Rollback |
| Time Required | 10–20 minutes per app | < 60 seconds across 40+ areas |
Related Windows Cleanup Guides & Hidden Space Hogs
Clean DaVinci Resolve Fusion Composition Cache & LUTs Automatically
SWEEPR Cleaner safely clears DaVinci Resolve Fusion Composition Cache & LUTs along with 40+ other hidden app folders and leftover files in one click—covering up to 5 devices (Windows, Mac, Android & iOS) with a 7-day undo safety net.