When I run my application, it takes a long time before I see any elevation being available for use. This is understandable if there were no cache folder created on first time startup. However, I'm seeing the same latency every time I start up the app.
I went to the C:/osgEarthTerrainCache folder which does get created on startup. However, the sub-folder "DTED0-b5a2c7fa" is empty which would explain the long latency I'm seeing.
My question is, is the cache folder for terrain no longer being used in osgEarth 3.1+? I don't remember seeing this behavior in older versions of osgEarth using the same source elevation data file.