Faster file copying (updated)

Decompressed files are automatically stored during the game to speed up loading and reduce lag. Supports universal plug-ins for OG/NG/AE/VR.

Original address:

Prefix:

Fallout 4 Script Extender (F4SE)：

Fallout 4 Script Extender VR (F4SEVR) (if you want to use the VR version):

Updated on September 14th:

Version 1.3.2

• Cancel the address database requirement
• Fixed issue with texture streaming in upgrade cache

Version 1.3.1

Added support for 1.11.240

Remove trampoline and go straight to storage/Mode C.

Combine compatibility mode and normal mode into one

Cache size is automatically allocated to 25% of total memory

Various cache validation improvements

Updated on June 11th:

Version 1.3

• Added support for 1.11.221
• Various fixes and optimizations

Updated on May 2nd:

Version 1.2.1

• Fixed value of fallback stream cursor accumulator 1.2

Version 1.2

• Compatibility mode is now automatically activated when Wine is detected
• Improved invalid cache detection

Updated on April 26th:

Version 1.1

• Added texture cache capture and serving
• Added memory mapping for plugins and archives
• Turn off caching until the archive is loaded
• Reduce default cache to 2.5 GB
• Added compatibility mode

What does this do?

This mod will store (and optionally memory map) unzipped BA2 files as you play. This allows the game to skip decompression and read the file directly on subsequent loads, thus shortening load times.

How to use

Install mod

Play games and your cache will fill up

Enjoy faster file copying

Please note: This module will store your unzipped BA2 files in \Data\F4SE\Plugins\FasterFileCopyFO4_cache. By default, full cache is enabled and limited to 5GB. You can adjust this value in ini. Allocating more disk space will bring more improvements. Limiting cache mode to only boot time reduces the required disk space (60MB on my system), but only improves load times at boot, not in-game.

You can adjust the disk space available to the module and enable statistics logging and memory mapping in the FasterFileCopyFO4.toml file in the Mod dir.

To further speed up loading, you can also try

Faster Decompression

Faster Loadscreens。

The default INI settings are:

[Universal]

Master Switch — disable plugins but don’t uninstall them

bEnabled = true

Baseline mode - the hook is installed, but all reads go through the original ReadFile.

Run once, run once, run once, compare load times in logs.

bBaselineMode = false

Log QPC timing decomposition and periodic statistics BA2Mmap.log

bEnableStats = false

Stats thread log interval (milliseconds)

iStatsIntervalMs = 5000

Log every read (extremely verbose, debugging only)

bLogReads = false

[Archives]

Place the memory mapped archive file into the process address space.

false = cache mode only (uncompressed entries are not read in mmap mode,

Only decompose cache service compressed entries)

bEnableMmap = false

[DecompCache]

Persistent decompression cache - stores pre-decompression BA2 data to disk.

First run: Build buffer from engine reducer output.

Next run: serve pre-decompressed data directly, bypassing zlib completely.

Compatible with FastDecompress.dll (the hook is in the inflation layer).

bEnabled = true

0 = startup only (cache is built on initial load, refreshed once)

1 = Start + Game (cache grows during game play, refreshed once in the background)

iMode = 1

Maximum total cache size in MB (0 = unlimited).

The oldest cached files will be evicted first when the limit is exceeded.

iMaxMB = 5000

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