The MD11 pushes your graphics card to the limit because of all the textures and various panels etc, this in combination with Zurich and the onset of dusk (dusk makes it worse i.e. day and night textures in memory) means that your texture memory on your graphics card is saturated and so some of the textures wont load. I presume you didn't start the flight at Zurich and rather this was an arrival at Zurich, I tend to get problems at dusk when arriving somewhere in the MD11 never when starting a flight.
