04-13-2019, 11:21 AM
It can affect simulation down the flow, it all depends on what your Particle Physics collision radius value is set to. If you have it set to absolute, particle scaling won't be considered. If you have it set to scale radius, any changes to particle scale will affect the sim.
If you want particle physics collisions to conform to your meshes (whose size may be independent of scale), set the collision to shape radius instead.
If you want particle physics collisions to conform to your meshes (whose size may be independent of scale), set the collision to shape radius instead.