This texture pack works in a way that particles and weather (like rain and snow) doesn't exist, making a "fps boost".This texture packs doesn't show any particle, when a creeper explodes, he doesn't "generate" any particle.When you throw a potion or you are under any effect, also there will be no particle.
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Changelog
Deleted all the particles.
Deleted all the weather stations.
Deleted End Sky.
Deleted Clouds.