I’m calling Cesium.sampleTerrain(scene.terrainProvider, 14, positions); in order to display the evevation.

When I move the mouse pointer, it request the tile (download the tile, parse the result, get the elevation).

But if I move a little bit It request the same tile (download the same tile, parse the result,…)

buut we already have the tile !!!

Do I need to call another function ?