If a user import a lot of animation in one fbx, the logic that compute the automatic framerate can diverge and hit a very high value. The maximum sample rate is 1920Hz which is very high,. The user cannot see the automatic frame rate in the import dialog, we should display this information.
We should also allow 3 options like: custom framerate, fbx file framerate and automatic framerate.
Import an fbx you will not be able to know at which frame rate it bake bone animation if you let the automatic frame rate sample.
There's no existing public thread on this issue, so head over to AnswerHub just mention UE-130601 in the post.