Click Green Flag. Press space to see @alicecoehoorn hyperdrive. Press H to see my modified hyperdrive/ Pressing H a second time will cause the hyperdrive animation to immediately repeat. It's still using 300 clones but this time the project just reuses the clones instead of deleting and re-cloning each one.
Clone test based on this post reporting a bug with cloning: https://scratch.mit.edu/discuss/topic/341284/ The scripts are from the above post and written by alicecoehoorn.