voxel.CoreRegionConcurrentAdmission (default on): tiles independent of the entering region keep submitting while a region page compiles; pages are immutable shared_ptr owners so running readers survive eviction. 6 m/s: 11 whole-pass skips -> 0, walkable ring ready at every centre change. voxel.StreamingResultBacklogCap=256 bounds finished results (slow-apply worst case 125 -> 76 MB). Spawn unchanged at ~7.7 s: LOD8 is 46% of worker time. At 60 m/s + teleport the collision ring is outrun (102/113 centres). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MmSoF64BbRFmk9C3p1VsBJ