Using the same camera, rendering twice, the results are very small difference

I would like to use UE4 to do a small animation, of course, will be rendering in UE4.

I put the camera and character on the matinee, using the same camera, rendering twice (Beauty and ID), but the result is different (Beauty and ID can not overlap, the character of the action will be slightly different).

I turn off motion blur and per Bone Motion Blur, but the results are still unacceptable

If I restart the computer to render again, there may be the results I want.

How to solve?

No one found this problem?