Unreal engine animation is shaking

all my animations made in blender are getting “shaky” in unreal.
See better in the video
I’m publishing this here because I’ve been trying to resolve this for weeks, I’ve already given up several times due to not getting any results.

I’m leaving links to several people who are having the same problems

https://www.reddit.com/r/unrealengine/comments/1d8g6v5/animations_imported_from_blender_become_shaky/

my old topic

(post deleted by author)

Assuming you’ve played with a variety of toggles in blender export and unreal import, does your skeleton contain constraints?