Scene Optimization Advisor

Scene Optimization Advisor

Module: Tech · Category: Performance · Tool ID: SceneOptimizationAdvisor

Two-tab CPU-side scene optimization. Significance & LOD uses UE’s SignificanceManager to bucket actors by importance and apply different fidelity tiers (logic LODs). Tick audit, Blueprint snippet export. Hierarchy & Merging audits component-tree depth, estimates transform cost, suggests mesh merges and HLOD groupings.

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When to use it

• CPU-bound scenes — finding the actors that don’t need full-fidelity logic
• Component hierarchy review — flattening deep trees that hurt transform updates
• Mesh merge / HLOD grouping suggestions
• Tick audit — finding actors with unnecessary tick

When not to use it

• Don’t expect rendering-side suggestions — see Rendering Systems Auditor for GPU
• Don’t expect this to author Significance Manager — UE’s USignificanceManager is what runs at runtime

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Opening the tool

1. Open the EQLabs Hub and search for Scene Optimization (or browse to Tech → Performance)
2. Click the tool card
3. Use the tab bar: Significance & LOD / Hierarchy & Merging

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Tab 1 — Significance & LOD

SignificanceManager bucket editor — define actor importance buckets and per-bucket fidelity (logic LOD). Includes:

• Tick audit per-actor
• Blueprint snippet export — paste-ready code for your AnimBP / GameMode

Tab 2 — Hierarchy & Merging

• Component tree depth audit
• Transform cost estimation
• Mesh merge suggestions — actors that could be combined
• HLOD grouping suggestions

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Settings reference

Persists via standard tool framework.

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Output

• Blueprint snippet export — text snippets for paste-into-AnimBP
• In-panel suggestions
• No level edits — read-only audit

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Tips & gotchas

• Logic LODs are different from mesh LODs — fewer ticks / cheaper code for distant actors, not lower-poly meshes
• Component hierarchy flattening saves transform updates — every component update propagates through children; flatter is faster
• Mesh merge suggestions need verification — sometimes the merge breaks gameplay (e.g., destructible / interactive components)

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Related tools

• Rendering Systems Auditor — GPU-side optimization
• Runtime Insights Suite — measure the impact of changes

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