I have disabled the "threaded optimization" of my nvidia GPU and the simulation runs significantly smoother. However, if the vehicle's speed is high, the jumps reappear. I have also examined the osggeometry example, as Paul suggested, and the effect is also present, though not so clear (this could be because my model is more complex than the 2D texture of the example). I don't know if it is a hardware problem or it is caused by the unconstant refresh rate of the update callback. Is there any possibility that the frequency of the update callback is smaller than the 25 fps needed to have a smooth movement?
Thanks a lot, Alfonso
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