Particle system scene scale

Hello blender friends. I have question about scaling and particle physics. When i set up scene with large objects - collissions and particles. It works fine for me. But what if I need particle system at smaller objects in my scene? If i scale down both collision object and emitter and even if I aplly scale I have “wrong” simulation. Particles are moving way too fast and interact with collisions in unpleasant way. Messing with settings in particle system led me nowere. So question is - is there way to make particles work at small scales. Or I just need scale up whole scene to match particles?
Sorry for bad spelling. Thank in advance.

I have the same issue. Simulations do not work at small scale.

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