Hi Michael,

I have also noticed this slight jerking movement using the Spacenavigator, but didn't think it was a MoI thing so I live with it, it's not bad but as Chris mentions it is smoother with other applications.

The reason for using a 3D Mouse is so you can manipulate the model while picking objects at the same time and if you can improve on this in V3 then it would be very welcomed and the workflow would be less distracting.

Cheers