I have noticed the following twice during the long taxi after landing at EHAM in the tutorial: somewhere during the taxi the PFD and the ND in the 3D cockpit both stop changing, although the popped-out 2D versions are still being updated. The problem can be easily fixed by changing to another view, and then going back to the 3D cockpit. It may have been stimulated by pausing the simulator during the taxi to open the Navigraph taxi chart, but I cannot reproduce this consistently.

I think this is a problem already known to complex FSX-airplanes. I experienced this temp-freeze of the Display in the VC on the 747 and Concorde. But I think it is independent from the approach-freeze of the displays + controls that many/some of us, including me, experience on the NGX. Regards, Chris Volle