My application is moving the camera close to the ground in a regular motion at about an aircraft speed and altitude.
I noted some regular flashing in the rendering and could observed that the terrain tiles are constantly reloaded: even when LOD shows high level of detail, I can see the tile closest to the camera being reloaded and cycle through all the LOD levels before settling again at the previous, high, LOD. This happens constantly during the camera motion and creates all kinds of visual artifacts. Also, measurement of ground elevation at the camera location is rendered erratic since the tile keeps cycling through all different LOD levels.
Anything I missed? Anything I can do to solve this problem? Is this a bug in Cesium?