I am currently in the process of rebuilding the whole export process. Exporting is too slow when there is much data. My goal was to have an instant download process, but i abandoned this idea.
In the future your exports will be placed in a download queue. This will run silently in the background while you keep working in Grubba. When the export is ready, you’ll get an email.
This will first be implemented in the new export to .rtf function, then the .csv download and lastly the .pdf download.