There have been a few mentions of the game being hard on CPUs, so I've added an adjustable button in the settings for setting particle density.
As far as I can tell, particles will likely be the culprit here, so I hope that this new settings allows more people to enjoy the game.
This was a little rushed, so I will be performing more quality tests to ensure nothing else got tweaked improperly.
Please write back with any feedback for other issues. Thank you!