Rendering Systems Auditor

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

Four-tab UE5 rendering pipeline auditor covering the four pillars of virtualized rendering. Nanite audits mesh suitability and monitors the streaming pool. Lumen Scaling automates Lumen CVar management with hardware-profile presets. Shadows (VSM) monitors Virtual Shadow Map page pool and tunes dynamically. Virtual Textures monitors VT physical pool residency and detects oversubscription.

ℹ️ Focus: runtime performance tuning. For scene correctness checks, cross-reference Lumen Scene Debugger and Virtual Texture Diagnostic.

Auditor on Nanite tab with mesh suitability stats and streaming pool monitor visible.

When to use it

• UE5 rendering performance tuning: Nanite / Lumen / VSM / VT
• Pre-shipping perf audit on systems-level rendering
• Hardware-profile preset application (low-end / mid / high / cinematic)
• Monitoring streaming pools at runtime in PIE

What it isn’t for

• Don’t expect this to handle scene-correctness issues. See Lumen Scene Debugger / Virtual Texture Diagnostic.
• Don’t expect this to fix asset-side issues. Runtime tuning only.

Opening the tool

1. Open the EQLabs Hub and search for Rendering Systems (or browse to Tech → Performance).
2. Click the tool card.
3. Use the tab bar: Nanite / Lumen Scaling / Shadows (VSM) / Virtual Textures.

Tab 1: Nanite

Mesh suitability + streaming pool monitoring.

Tab 2: Lumen Scaling

Automated Lumen CVar management with hardware-profile presets (Low / Medium / High / Epic / Cinematic). Apply a preset, all relevant Lumen CVars set together.

Tab 3: Shadows (VSM)

Virtual Shadow Map page pool monitoring + dynamic tuning. Surfaces page pool overflow conditions and suggests CVar adjustments.

Tab 4: Virtual Textures

VT physical pool residency + oversubscription detection.

Output

• CVar changes. Applied during Lumen Scaling preset apply (and similar).
• In-panel monitoring. Live during PIE.
• No asset edits. Runtime tuning only.

Tips and gotchas

• Lumen scaling presets are starting points. Tune to project after applying a preset.
• VSM page pool overflow is a frequent UE5 perf issue. Monitor in PIE, adjust pool size CVars.
• VT oversubscription causes streaming hitches. Large pool sizes solve this but eat VRAM.

Related tools

• Lumen Scene Debugger — scene correctness side
• Virtual Texture Diagnostic — VT setup side
• Runtime Insights Suite — broader runtime profiling