Hello, I just follow the Low Poly Rocket tutorial and everything works well until the rendering part. When I'm running the animation on Blender, it looks good, no bugs... but when I'm rendering it, looks like this: https://we.tl/t-vSl62YDIVN
Can someone tell me what kind of settings I should modify to fix it, please?
Houston, we have a problem!
You say it only happens in the render, not in the viewport?
Did you adjust any settings, like the velocity, before rendering?
The viewport particle animation is cached to memory, to speed up the viewport play back.
If you changed anything without re-caching there will be differences.
Its hard to determine what the exact cause is from a video, if you can share the .blend file we can take a look and diagnose the issue.
My first guess is the velocity, did you set keyframes on the velocity setting?
It could also be a GPU issue, make sure your GPU drivers are up to date.
You can share the .blend file with Google Drive or Dropbox or similar and post the link here.
Thanks for the support and advices guys!
In the end, the problem was with the bake particles indeed, as 
spikeyxxx already said.
