so guys i have been working on a tornado shot with ribbons ,
i have used line attraction and vortex force and other basic modules
but the simulation i see in the view port is not exactly reflecting in the movie render
i also tried checking fix delta time in the system properties
didnt seem to work . the simulation itself totally different in the render
can someone please help me on this
would be very helpful
thank you
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Updated the category to Technical & Engine Help to hopefully get more eyes on your problem and a potential solution 
Hi, Did you find a solution on this?
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I ran into this issue myself over the weekend (or at least something very similar).
In the viewport, the ribbons behaved as expected, but during renders they would move super erratically. First image is viewport, second is movie render.
After a lot of fiddling, I found that the Anti Aliasing option in the movie render queue was causing it. However, I wanted to keep that setting turned on, as it fixed some tearing between the rocks and the main beam in the effect.
Eventually, I found that I could have AA on if I disabled jitter position in the offending niagara system. Iām not an expert, but my assumption is that the jitter position node is still carrying on as normal during the anti aliasing subframe capture stuff.
Apologies for not having a direct fix for this issue, but hopefully this post can help someone who had the same issue as me!