The reason why they are using the FPS (frames-per-second) term in a different way, is that this robotics simulator is primarily going to be used for reinforceme

The reason why they are using the FPS (frames-per-second) term in a different way, is that this robotics simulator is primarily going to be used for reinforcement learning, where you run thousands of agents in parallel. In that context, the total "batched" throughput of how many frames you can generate per second is crucial for training your policy network quickly - than the actual latency between frames (which is more important for real-time tasks like gaming)