Niagara Particles behaving weirdly , activating collision only when near

My niagara particle is behaving weirdly , the collision only activates when near the particles or else the collision suddenly disappears making particles fall through roof, any help will be awesome !.
Regards and thanks
Please find the attached

Hey! I’m currently facing similar issue, searched a lot, but still cannot find any information and ways to solve this problem. Did you find any solution with this stuff?