Volumetric clouds lack quality, not enough detail (scale problem?)(blend attached)

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Hi Guys,

I made a scene with volumetric clouds, they are 1200m x 600 m in average size. Is that a mistake?

When I followed the tutorial about volumetric clouds it looked really good. But the size was only 43x43meters.

I have tried to scale them up (applied Ctrl+A >> scale, adjusted global scale in the shader from 1 to 0.02). Does not help. No matter what I tweak, there’s not enough detail, they always look blurry.)

I tried to tweak scale noise values, no luck. It seems I just don’t understand something.

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image1219×699 118 KB

Here’s my blender file:

Thanks for the help guys!