Animation retargeting jitter

Hi, I recently managed to import an animation I have made in blender, for the mannequin character. I used the UE4 Tools addon in blender. I imported it with my blender character and retargeted the animation using “duplicate anim assets and retarget”. When I look at the animation the retargeting seem to have gone just fine but when i try use it in my animation blueprint the transition becomes jagged and the feet comes under the ground for a slight second. I can’t really see what the exact issue is and I would appreciate some help