Trouble with fireworks-Game Stucks

Put the summary of the bug you're having here

*What I expected to happen was...: I expected that the game doesn't crash if I shoot the fireworks to the sky...
Describe what you thought should happen here

*What actually happened was...:The game began to stuck by 0 FPS, just a restart helps to run it for 5 seconds.
Describe what happened here

Steps to Reproduce:
1. Place down a dispenser and build a clock (doesn't matter which one).
2. Put in 64 rockets in the dispenser and start the clock.
3. Now it shoots the rockets to the sky, and a few seconds later it should stuck by 0FPS.

I tested it on some computers, so I guess it's a bug.