{
  "frames": 777,
  "fps": 25,
  "duration_seconds": 31.08,
  "source_run": "benchmark-v1-20261009-152357",
  "mapping": "Each observation held until next measured CPU-clock timestamp, at 0.25x game speed; 2s opening, 1s episode endings and 2s final card added. No interpolation; controller pauses omitted. Silent.",
  "native_game_field": [
    320,
    200
  ]
}