Runnig the demo i got jerky view

[redbear]

I am runnig the demo of this game to have an idea of PCK but when i try to move my view using the mouse the view moves but with jerky moves to the places also my units moves that way when in the action phase.

Is this a prblem with the demo only?

My rig is AMd dual + 3800 2 GB ram Nvidia 8500

I think the demo version is the vanilla of the game so PCK should be ok any way.