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hz-perfetto-debug

Analyzes Meta VR and Horizon OS VR performance using Perfetto traces — frame timing, CPU/GPU bottlenecks, render pass analysis. Use when profiling frame drops, jank, or thermal issues on Meta VR devices. Build paths: all Meta VR app stacks; use hz-quest-verify-first if the build path is unclear.

skills/hz-perfetto-debug/SKILL.md

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Last checked
Nov 5, 2026

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246
Repository last updated
Sep 24, 2026
License
Apache-2.0

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# Perfetto Debug Skill

## When to Use

Use this skill when investigating VR performance issues on Meta VR devices:

- Frame drops, jank, or stuttering
- CPU or GPU bottlenecks
- Render pass overhead and GPU utilization
- Thermal throttling and clock frequency changes
- Frame timing variance and missed vsync deadlines
- Thread contention and synchronization issues
- High draw call counts or overdraw