My local fog disappear in small distance

Hi guys! I’m new to ue, recently learn to make local cloud/fog. I made a piece of fog using particle system, but I found it would disappear visually once the camera leaves a little far away from it. so I can only stay very very close to see it.

I thought I was the cull distance, but I couldn’t find any changes to make it better.
My work mate try it on his cmp today and his works totally normal, umm…then I change my graphic setting to very high but it didn’t work. Tutorials I’ve seen didn’t have this problem and they didn’t change any about it, either.

This is the could when I stay very close.

Just a step back it disappear.

Have you guys seen this problem before? Very appreciate for any idea:)

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