Isaac Sim 6 Troubleshooting — Large USD Scene Hangs

Diagnosis and resolution for Isaac Sim 6.0 (Kit 110) hangs, freezes, and perf degradation on large USD scenes (10K-150K+ prims, factory/warehouse twins).

Upstream debugging docs: docs/isaacsim/utilities/debugging/ (profiling, Python debugging tutorials). Pair this skill with profile-isaac-sim for Tracy-based diagnosis.

Quick Diagnosis Flowchart