Saving a file takes a long time

Hi

I spent quite a few hours looking what might be the problem with my computer spending a long time in saving the file Gears,dxf, I didn't get anywhere.

In view of that I downloaded today the program QCAD 3.10.0. I opened with this program the file Gears.dxf and edited a bit. I then saved the file without any problem. It took about 2 sec. (I cannot measure the time accurately).

The original file is 4774 Kb and the saved file (after moving a text entity) is 4906 Kb.

I still don't know what the problem with LibreCAD is.

Thank you for all the work you have done with this problem.

TODO:

explicitly buffered I/O stream

has its own thread for file saving: do not block the UI thread