Faster Decompression
🟡 Updated this year⚠️ Install Order · 5 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview
🔍 Analysis
- 👍 4.0% endorsement rate — high engagement, a strong quality signal
- 🏆 #6 of 7 Performance mods in this game by downloads
📋 About This Mod
This is an adaptation of my Skyrim and Fallout fast decompression mods. Originally inspired by Zlib updated, it switches the majority of BSA decompression to Libdeflate, combined with Chromium-zlib, achieving up to almost 3x faster decompression compared to the base game, and up to 2x faster decompression than Zlib updated.
This should speed up your loading and cause less stutter (but decompressing your mods will still be faster)
This mod replaces Zlib updated and the decompression part of Psycho (make sure this mod runs after Psycho and set zlib = false in the Psycho .toml file if you want to use it).
AI tools were used extensively in the creation of this mod.
NVSE Team - New Vegas Script Extender
WallSoGB - Fallout-zlibUpdate (hook addresses and patching approach reference)
Eric Biggers - libdeflate (one-shot decompression engine)
Google Chromium Authors - Chromium-zlib
Jean-loup Gailly & Mark Adler - zlib (original compression library)
Faster Decompression is a performance mod that replaces the outdated zlib decompression in BSA asset loading, making vanilla decompression 3x faster. With 225 endorsements and over 5,600 downloads, it's a lightweight optimization for players seeking quicker load times.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Solid community trust (225 endorsements) and over 5,600 downloads
- Direct performance boost: 3x faster decompression is a noticeable win for load times
- Simple, focused mod—does one thing and does it well
⚠️ Cons
- Performance gains may vary depending on hardware and game version
- Limited to BSA decompression—won't help with other performance bottlenecks
For Skyrim players who want faster load times without overhauling their entire mod setup. If you're tired of waiting on BSA loading screens, this is a quick win. Skip if you're looking for broader performance improvements—this only targets decompression.
💡 Beginner Tips
- Make sure you have the latest game patch, as older versions may not benefit from the replacement.
- If you use a mod manager, install this mod like any other and let it overwrite the original files.
- Test load times before and after to see the difference on your specific setup.
📊 Mod Details
- Game
- New Vegas Mods
- Author
- Asciim0v
- Version
- 1.2
- Downloads
- 5,626
- Endorsements
- 225
- Category
- Performance
- Created
- 3/19/2026
- Updated
- 3/23/2026
🔧 How to Install New Vegas Mods
Download from Nexus.
📖 Full step-by-step install guide for New Vegas →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for New Vegas commands, item IDs, and more.
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