Nvidia d3d9 perf fix

⭐ ⭐⭐⭐ (11,922 endorsements) 📥 655,244 downloads 📅 10/20/2010
⚪ Last updated 2010

By wing pao shiggz · Utilities

⬇ Download Mod Source: Nexus Mods 📅 Updated: 10/26/2010 📅 Created: 10/20/2010
⚠️ Install Order · 5 steps
1🛠️ NVSE — New Vegas Script Extender Download ↗
2🛠️ 4GB Patcher — FNV 4GB Patcher Download ↗
3🔧 NVAC — New Vegas Anti Crash Download ↗
4🧩 JIP LN — JIP LN NVSE Plugin Download ↗
5🔧 YUP — Yukichigai Unofficial Patch Download ↗

Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.

🔍 Analysis

  • 👍 1.8% endorsement rate — high engagement, a strong quality signal
  • 🏆 #28 of 57 Utilities mods in this game by downloads

📋 About This Mod

After the 1. 2 patch I no longer use this. I suggest you also try the game again without. \"This .dll file is essentially a light-wrapper for a \'supported\' video card\'s .dll, which tricks the game into configuring its FaceGen software (which was causing a performance problem) in a more efficient manner.\" (HT @ \"4000qails\") This will make your game run nearly like fallout 3 ran on your same computer. Like it should since there was very little visual improvements. ================================== -use winrar to unpack file Works with Ati and Nvidia however, for ATI cards to use transparency AA. http://www.newvegasnexus.com/downloads/file.php?id=34970 cheers to Aleksei for his work. ================================= Drop in \"fallout new vegas\" folder to force the game to use this dll instead. If in right place launcher rescans/defaults settings. (After it defaults settings and shows as a \"7900\" or \"8600\" if you use 2nd file then remember to redo your preferred graphics settings.) I have a quad core/5870/8gb ram and perf was awful until I did this. I instantly got 4x framerate during \"goodsprings event.\" =============================================== -sometimes crashes with 2 monitors -most people report crashes with crossfire or SLI -usually crashes with XFIRE possible fix in XFIRE= (Tools>options>\'game\' tab) Then click on the checkbox \'Disable Xfire in game\'. -2nd file does not work on my ATI 5870 it may work better for you. =============================================== uininstall It does not change/replace any files just delete this one file and the game will go back to using the normal one in windows directory. notes* -If you are having crashes simply delete it. IFF you are still having crashes then obviously this was not the cause. (does this even need to be said?) -this game is only dx 9 there are no dx 10 or dx 11 features. -may crash during final cinematic (simply remove this single .dll file when you get near the ending) ---------------------- Jotti scan showed perfect. Feel free to check for yourself. http://virusscan.jotti.org/en ---------------------

🤖 AI-enhanced — based on mod data

This utility replaces the d3d9.dll in Fallout: New Vegas with an older version that reportedly performs better for some users. It's a simple drop-in fix with high community endorsement (11,922) and downloads (655,244), last updated in 2010.

✨ Key Features

Replaces the game's d3d9.dll with an older version for improved performance
Simple drop-in installation: place the .dll in the game folder with the launcher and .exe files
High community trust with 11,922 endorsements and 655,244 downloads

📊 Pros & Cons

✅ Pros

  • Huge community backing: 11,922 endorsements and over 655k downloads show it's a proven fix
  • Dead simple to install – just drop the .dll into your Fallout New Vegas folder, no mod manager needed
  • Potential performance boost for those experiencing d3d9-related issues, especially on older hardware

⚠️ Cons

  • Last updated in 2010 – may not be compatible with newer game patches or Windows versions
  • No detailed instructions or troubleshooting provided by the author
  • Replacing system DLLs can cause instability if the version doesn't match your system
🎯 Is This For You?
For Fallout: New Vegas players who are experiencing performance issues and want a quick, community-tested fix. Skip if you're on a modern system with no problems or if you prefer up-to-date mods.
📦 Install:Easy· Under 1 minute

💡 Beginner Tips

  • Back up your original d3d9.dll before replacing it so you can revert if needed
  • Make sure you place the file in the correct folder – the one containing FalloutNV.exe, not the Data folder
  • If you're using a mod manager, you can still install this manually; just drop the file in the game root

📊 Mod Details

Game
New Vegas Mods
Author
wing pao shiggz
Version
N/A
Downloads
655,244
Endorsements
11,922
Category
Utilities
Created
10/20/2010
Updated
10/26/2010

🧩 Commonly Used Together

Users add these mods to the same collections — a real compatibility signal, not an AI guess.

🔧 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.

Keep browsing — more New Vegas mods await

📋 All New Vegas Mods 🏆 Top 25 📂 More Utilities 👤 More by wing pao shiggz 🔎 Similar Mods 🌐 Best Utilities (All Games) ⚠️ Fix Crashes & Errors 🔀 Check Compatibility ⚖️ Compare Mods 🆕 New Mods