Hello,
I’ll use the Unity Raw Mocap Data Asset on my own Character.
The Problem is that the proportions of the rig is different from a normal human. It works perfekt without FootIK
but if I use it…
Please, show the pictures 
With IK
WithoutIK
Rig
Hope someone can help me 
Hi Spy,
Which version of Unity are you using?
Normally IK goal are retargeted into the character space to avoid these kind of artifact. So either there is a bug or the proportions difference is too big.
Can you log a bug with a small repro project with only one animation file and your character, pm me with your case #
Best regards,