Smooth Curves

Overview

This modifier smooths out midpoints of curves based on their tangent deviation while not affecting their roots and tips

Iterations: How many times the smoothing algorithm will be applied to the curves in the object. This parameter can tank performance if set to a high value on an object with many curves
Smoothing Exponent: The strength of the smooting is more severe for points where the tangents of adjacent points create a narrower angle, and the effect is more subtle for wider angles. This parameter controls this blending, where values lower than one will make the modifier have a higher impact on wider angles as well, while values higher than one will reduce the effect on points with wider angles
Smoothing Cutoff: Points with tangent angles above this will not be affected by the smoothing algorithm at all. This parameter can be easier to understand and configure than Smoothing Exponent, with the added benefit that as these points are completely excluded from the smoothing process it can also have a significant impact in performance, improving calculation speeds for high iteration counts

The smoothing effect of this modifier will also somewhat normalize the distance between curve points. If placed after a Resample Curves modifier with decimation parameters enabled, this can cause the shape defined by the curve to be significantly altered.