Optimization - Occlusion Planes and Boxes - No PreVis and PreCombines for Exterior Cells

⭐ ⭐ (217 endorsements) 📥 9,075 downloads 📌 v015 📅 1/18/2025
🟠 Updated over a year ago

By WasteTheLand · Performance

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 4/13/2025 📅 Created: 1/18/2025
⚠️ Install Order · 2 steps
1🛠️ F4SE — Fallout 4 Script Extender Download ↗
2🔧 UFO4P — Unofficial Fallout 4 Patch Download ↗

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

🔍 Analysis

  • 👍 2.4% endorsement rate — high engagement, a strong quality signal
  • 🏆 #13 of 14 Performance mods in this game by downloads

📋 About This Mod

Proof of concept.

The purpose of occlusion culling is to find geometry that has zero effect on the final render buffer because it is behind other geometry, and eliminate that geometry as early in the render process as possible to reduce wasted CPU and GPU time.

Preface

Optimized Occlusion Planes and Boxes uses occlusion culling and disables Pre Vis and Pre Combination to render. Occlusion planes and boxes are added where ever possible to skip objects not required to be rendered.

All the objects formerly precombined can now be used and interacted with.

As of version 010, this seems to work as expected, so proof of concept worked as expected.

Due to the amount of work to SCOL the rest of the clutter and decoration this project is still considered a Proof Of Concept. Expect certain areas to cast additional load on your system due to increase in draw calls due to missing optimization in regard to missing SCOLs.

Overview

- Affects Exterior Cells

- Alters PreVis

⠀- Blanks PreVis Files Timestamp (VISI)

⠀- Blanks PreVis Reference Index (XPRI)

- Alters PreCombination

⠀- Blanks PreCombined Files Timestamp (PCMB)

⠀- Blanks Combined Reference Index (XCRI)

- Unflags static objects: "" to "Placed Object" which in turn allows any modder to alter any object without fearing to break anything now you can truely mod the game ;)

- Affects performance

⠀- Occlusion Markers have been and more will be added since these increase performance almost close and sometimes better than PreVis and PreCombination

⠀- SCOLs will be added later for the Skyscrapers in downtown Boston this will increase rendering even more, since a SCOL reduces object count/draw calls (!), if your curious, go into the CK and search for "BIGBILDING" its an unused SCOL super building structure and this is what should have been used from the beginning.

- Disables most micro stuttering due to new/old rendering method

This mod also disables the Data\Textures\Shared\Cubemaps\mipblur_DefaultOutside1.dds file by default, to allow puddles to reflect sunlight much better. Just like Nuka-World does it right.

Installation

This mod can be in-/unstalled anytime but it is recommended to start a new game with minimal load order since its in active development.

This mod affects Pre Combined meshes and/or Pre Vis data.

Load absolutely last!

Compatibility

This mod works with both, th

🤖 AI-enhanced — based on mod data

This Fallout 4 performance mod replaces PreVis and PreCombines with Occlusion Planes and Boxes for exterior cells, aiming to improve performance. With 217 endorsements and 9,075 downloads, it's a niche optimization tool for players seeking alternative performance tweaks. Last updated April 2025.

✨ Key Features

Replaces PreVis and PreCombines with Occlusion Planes and Boxes for exterior cells
Aims to improve performance in exterior areas
Active mod with recent update (April 2025)

📊 Pros & Cons

✅ Pros

  • Solid community trust with 217 endorsements
  • Over 9,000 downloads shows real interest
  • Fresh update in April 2025 means it's still maintained

⚠️ Cons

  • Potential compatibility issues with mods that rely on PreVis/PreCombines
  • May cause visual glitches or pop-in in exterior cells
  • Performance gains vary by system and load order
🎯 Is This For You?
For Fallout 4 players chasing extra FPS in the Commonwealth who are willing to experiment with alternative optimization methods. Skip if you use mods that heavily modify exterior cells or if you're not comfortable troubleshooting potential visual issues.
📦 Install:Easy· Under 1 minute

💡 Beginner Tips

  • Make sure to place this mod early in your load order to avoid conflicts with other exterior cell mods.
  • Test in downtown Boston to see if the performance gain is worth any visual trade-offs.
  • If you see missing objects or flickering, try disabling other performance mods that affect exterior cells.

📊 Mod Details

Game
Fallout 4 Mods
Author
WasteTheLand
Version
015
Downloads
9,075
Endorsements
217
Category
Performance
Created
1/18/2025
Updated
4/13/2025

🔧 How to Install Fallout 4 Mods

Download from Nexus.

📖 Full step-by-step install guide for Fallout 4 →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Fallout 4 commands, item IDs, and more.

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