Global Mapper v25.0

How do you export a region of a basemap to kmz/geotiff with less data

I would like to export a small region of World Imagery but the data set size is always very large and app hangs whenever I choose kmz or geotiff (web format)

When I rectify a jpeg using same Imagery as reference I can get a quick export by exporting as GeoTiff then converting geotiff to kmz, and all is well.

Is there a way to export the imagery (without first rectifying a screen shot) such that I get a quick geotiff download?

Am I making sense?