Hey @chrisrcampart, please check out the latest responses by @DarkMatter in Mixamo Multiple Animations .fbx → Blender → .babylon Format
I think you will have to go into the .babylon text file and add/subtract 1 frame from from and to in ranges for the stuttering animations. You may need to do this by trial and error until the animations are no longer stuttering, but I find that removing 1 frame from the start and/or end of an animation eliminates the stuttering.
