Improves teleop performance towards to 45 FPS (#277)

# Description

This MR improves the teleoperation performance to 45 FPS.

## Type of change

<!-- As you go through the list, delete the ones that are not
applicable. -->

- Bug fix (non-breaking change which fixes an issue)

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

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- [x] I have done this task
- [ ] I have not done this task
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scripts/tools/record_demos.py

@@ -199,7 +199,7 @@ def main():
     current_recorded_demo_count = 0
     success_step_count = 0
     with contextlib.suppress(KeyboardInterrupt) and torch.inference_mode():
-        while True:
+        while simulation_app.is_running():
             # get keyboard command
             delta_pose, gripper_command = teleop_interface.advance()
             # convert to torch

source/isaaclab_tasks/isaaclab_tasks/manager_based/manipulation/stack/stack_env_cfg.py

@@ -184,7 +184,7 @@ class StackEnvCfg(ManagerBasedRLEnvCfg):
         self.episode_length_s = 30.0
         # simulation settings
         self.sim.dt = 0.01  # 100Hz
-        self.sim.render_interval = self.decimation
+        self.sim.render_interval = 2
 
         self.sim.physx.bounce_threshold_velocity = 0.2
         self.sim.physx.bounce_threshold_velocity = 0.01