Slow performance in 3.2/3.3 compared to 2.8

[tompollok]

Hello,

Im experiencing a significant slower performance with the latest osg versions (3.x) compared to the old version (2.x).

In 3.x, for loading geotiff image layers, im using now:

osg::ref_ptrosgEarth::GDALImageLayer layer = new osgEarth::GDALImageLayer();
layer->setURL(path.toStdString());
map->addLayer(layer);

For loading elevation layers:

osg::ref_ptrosgEarth::GDALElevationLayer layer = new osgEarth::GDALElevationLayer();
layer->setURL(path.toStdString());
map()->addLayer(layer);

When displaying the globe, it loads the tiles only very very slowly - basically not usable performance. In 2.x i was able to morph to a geolocation and instantly see the rendered globe with the geotiff imagery.

I was able to improve the performance a bit, by converting my geotiff files. However, im still not reaching the old performance, while having an increased geotiff size on disk.

gdal_translate -of GTiff -co TILED=YES input.tif output.tif

Is there anything else that i can do to improve the performance?

I have tried the solution from the following thread, but it did not seem to improve anything for the better for me.
#2049

[liu-do-program]

Hello,did you solve this problem?

[FuXiii]

I have the same problem, when I add a elevation tif file into osgearh scene, after I close to the terrain , frame rate decrease and slow. By the way I use osgEarth+Qt