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    {
      "draw_calls": 11,
      "dropped_simulation_seconds": 0.0,
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      "gpu_visibility_active": true,
      "interpolation_alpha": 0.0,
      "physics_debug": false,
      "render_call_ms": 2.787518,
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      "renderer_readback_cpu_ms": 0.68932,
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      "texture_count": 1,
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      "vertices": 66,
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  "simulation_mode": "synthetic_fixed_timestep",
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    "main_to_first_frame": 659.174505,
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    "scene_read": 0.541101,
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    "gpu": {
      "max": 0.616,
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      "p50": 0.571552,
      "p95": 0.616,
      "samples": 6
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    "render_call": {
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      "p50": 3.686664,
      "p95": 10.370041,
      "samples": 6
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    "renderer_cpu": {
      "max": 10.363859,
      "min": 2.780405,
      "p50": 3.678208,
      "p95": 10.363859,
      "samples": 6
    },
    "renderer_readback_cpu": {
      "max": 3.834413,
      "min": 0.584382,
      "p50": 0.68915,
      "p95": 3.834413,
      "samples": 6
    },
    "simulation": {
      "max": 0.4082,
      "min": 0.191871,
      "p50": 0.254069,
      "p95": 0.4082,
      "samples": 6
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    "snapshot": {
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      "p50": 0.198174,
      "p95": 0.222941,
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    "wall": {
      "max": 10.973259,
      "min": 3.251403,
      "p50": 4.128828,
      "p95": 10.973259,
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  "timing_notes": "Durations use steady_clock wall time, not thread CPU usage. render_call/renderer_cpu include GPU waits, readback and window presentation. renderer_readback_cpu measures map/copy/unmap wall time within that call. GPU timestamps cover submitted rendering, not CPU work. A missing/zero GPU timestamp is null. Frame durations exclude profile bookkeeping and final capture/profile file writes. Startup begins at Player application entry after platform argument normalization, excluding OS loader/launcher.",
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  "version": 1,
  "visibility_mode": "gpu-frustum",
  "width": 1280
}