Struggling with this issue for a while. It involves a camera attached to a moving vehicle filming the driver. They are locked together in motion. Scrubbing in sequencer everything looks fine, but when I playback or render with mblur there is a crazy camera jitter (see attachment)
Anim for all the components is baked @ 20 subframes in Maya, keys set to linear then exported to FBX.
As a test I imported the same anim back into Maya and the various components are perfectly locked.
Seems like Unreal is interpreting subframes differently between the camera the geo??