I have a big geotiff file (resolution 2m, 192500 columns, 120000 rows, 100GB) representing a DEM model for a whole country. When I open in in ArcGIS it works fine, but in QGIS I need to wait half an hour for the file to load and show me the result. This make it impossible to perform any operations on the raster.
What can I do to make it work in QGIS? Why does this problem occur?
Edit: adding raster Info