PSO Autopilot (Core) for UE5

PSO Autopilot (Core)

A Solution to Unreal Engine 5 OOM Crashes

The "Shader Compilation" plugins on assorted marketplaces brute-force load all of your assets at once. If you have a massive 50GB project, this will cause your RAM to spike, your loading screen to freeze entirely, and eventually result in an Out-Of-Memory (OOM) crash.

PSO Autopilot aims to fix this.

The Core Feature: Memory-Safe Chunking

Instead of loading thousands of materials simultaneously, PSO Autopilot Core uses the FStreamableManager to asynchronously stream your Materials in controlled batches (e.g., 100 at a time). After a batch is compiled via the Engine's native FShaderPipelineCache, the plugin explicitly drops references and yields to Unreal's asynchronous Garbage Collection. Your RAM footprint remains completely flat, making this tool safe for massive open-world projects.

A detailed manual is available at: https://gregorigin.com/PSOAutopilot/ A Pro version is available at Fab. It includes important additional functionality: Time-Sliced Game Thread Yielding, Smart Cache Skipping, Engine PSO Pacing. If you are releasing a commercial game and want a truly seamless player experience, you probably want the Pro version.

Comparison	Core GitHub version (0.1+ MIT)	Pro FAB edition (0.3+ Closed)
Version	Core	Fully featured + updated
Distribution	Source only	Binaries, vetted by Epic
Engine support	UE 5.7.0	UE 5.6 - 5.7.3+
Memory-Safe Chunking	Included	Included
Mitigation of Out-Of-Memory of crashes	Included	Included
Loading Screen drops to milliseconds	Included	Included
Time-Sliced Game Thread Yielding	n/a	Included
Smart Cache Skipping	n/a	Included
Engine PSO Pacing	n/a	Included
Niagara systems support	n/a	Included
Zero-Redundancy Boot	n/a	Included
3-level Torture Test Demo	n/a	Included
Updates	n/a	Regular, vetted by Epic
Quality Assurance	GitHub Issues	Vetted by Epic, tested by author
Support	GitHub Issues	Forum & Email

How to Use

1. Copy the PSOAutopilotCore folder into your project's Plugins folder.
2. Regenerate Visual Studio files and compile.
3. Open Unreal Engine. Go to Edit > Project Settings > PSO Autopilot Core. Set your target directories and batch sizes.
4. In your Loading Screen UI Blueprint, call Get Game Instance Subsystem -> PSO Autopilot Core Subsystem.
5. Bind an event to On Progress Updated to drive your loading bar.
6. Call Start Warmup.

Code by Andras Gregori. MIT License.