# Physics and Framerates

Depence features a real-time physics engine for fluid dynamics, which highly depends on the current render framerate.

The calculation of fluid dynamics takes several parameters into account. The amount of particles at a given position is also very important for density and pressure calculation.

While only a solid number of particles can be emitted per frame it is therefore essential to keep the framerate as constant as possible, otherwise, these calculations would no longer work as expected.

{% hint style="info" %}
The engine was optimized for a framerate of 60fps, which should be always the target framerate for animations.
{% endhint %}


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