Particule spaceship

hello,
I have one problem, I use particules for my spaceship. But it moves quickly and particules bug. They appear each frame, and that is extremely sluggish.

Look the picture :


I have try the subframe but I dont understand how does it work.

Can you help me ?

Thanks :wink:

Hard to know what the problem could be from just one picture. Make sure the Cache step is 1.

I have found !
The problem is that my object is parent of an other and i have to bake the constrainst of the objet for have a fluid movement. Thanks AlanK for your answer :wink: