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.

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.

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

etc

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Filename: FlexPartitionUE57_v1.8.3 vfxMed.7z [17.0 MB]

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