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.

Advisor on Significance tab with bucket editor visible, actor list categorized by significance level.

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

What it isn’t for

• 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.

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.

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

Output

• Blueprint snippet export. Text snippets for paste-into-AnimBP.
• In-panel suggestions
• No level edits. Read-only audit.

Tips and 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).

Related tools

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