Flex Partition brings World Partition style streaming to runtime actors. Manage thousands of actors with efficient 2D/3D spatial grids driven by multiple sources, delivering smooth performance and a built-in save system for runtime and persistent data.
Integrates with FlexPool to optimize spawn and despawn through efficient actor pooling.
Try It Out
Demo Project V1.0 – Explore the core features and functionality in action.
Example Project V1.0 – See a practical implementation in a real-world use case.
Features
• Actor Lifecycle Streaming: automatic spawn and despawn by spatial relevance.
• 2D or 3D Spatial Hash Grids: scalable relevance queries across any world size.
• Multi Grid Support: per-actor grid selection with multiple grid configurations.
• Anti Pop-In Hysteresis: prevents rapid activation and deactivation.
• Rate-Limited Processing: controlled spawn and despawn to avoid frame spikes.
• State Persistence: preserves actor state using SaveGame properties.
• Custom Streaming Sources: supports player or custom source components.
• Extensible Streaming Logic: supports custom spawning systems such as pooling.
• Debug Visualization: visualize grids and actor bounds via console variables.
March 25, 2026
• Improved spatial grid system.
• Added project-level Editor Settings with apply-to-world option.
• Minor internal improvements.
March 9, 2026
No notes provided for this update.
February 22, 2026
Version 1.8 – Major Reliability & Save System Upgrade
This release introduces a major upgrade to actor identification and streaming persistence.
Deterministic Actor Identification
Replaced ActorStreamingIdentifier with FGuid for fully reliable and consistent runtime identification.
Introduced FActorStreamingConfig to centralize streaming settings at the class level, simplifying configuration and improving scalability.
Expanded Save System
Automatic state capture and restore for streaming actors.
Optional level name prefix for save slots.
Blueprint-accessible SaveStreamingData and LoadStreamingData.
Per-actor save participation control via bEnableSave.
Improved Extensibility
Refactored FlexPartitionHandle with improved Blueprint (K2) support.
Enhanced spawn/despawn customization while maintaining stable, rate-limited streaming performance.
This update significantly strengthens reliability, scalability, and persistence for large-scale runtime streaming systems.
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