The program responds only with a long delay

Development
1

Hello, I created a spreadsheet and sent it to my partners in Congo.Or set in Dropbox However, the partners were practically unable to edit the table because it reacted extremely slowly, with a delay of up to 5 minutes.I am therefore wondering whether calibra always needs an internet connection. I had a meet conference with my partner at the same time and he showed me his screen But even without it, it wasn’t any faster, as the partner reports.