Exported .anim root motion is incredibly exaggerated and doesn't match the umotion clip

I've been working with a motion capture setup to record actors' movements. In the latest animation, the actor stands up from a seated position, moves left and right of the chair, then sits back down. When I import the animation file to Unity, the playback is accurate, but needs cleanup. The animation file matches the humanoid rig, as the models/skeletons I'm using are specifically designed for use with Unity's humanoid rig system. The problem is that once I finish cleanup and export the clip as a .anim file, the motion of the animation is far too exaggerated; the actor starts WAY below the center point, and when they stand up they shoot 10 feet in to the air. Slight turns of the body move them a meter in either direction, and walking on either side of the chair actually sends them 20 feet to the side. Is there something that I'm doing wrong with the export process? Or is it something I'm doing in the editing process? It seems like it might be a problem with the root motion but I'm no expert and can't be sure.