I have the morphing textures issue described by Holger in this post http://www.orbxsystems.com/forum/topic/79004-resolving-rapid-ground-texture-morphing/ however following his instructions, unfortunately has had no effect. I have posted in their support forum and will wait for a solution.
The situation is that I have Eu selected in Central and am flying from Dishforth within the UK. Ahead of the Wellington's nose you can see a patch of sand with water in it. This had changed from grass and changed yet again having passed over the area.