LibreOffice Writer 5 misbehaved badly under Ubuntu 16.04. With file Ur-Text.7.docx up, keyboard and page control
were extremely sluggish. A slight turn of the mouse scroll wheel began a slow, line-by-line march downward. The march never ended. The machine slowly locked up. I tried to bring up the System Monitor with no success. Within 90 seconds, the machine was completely unresponsive. I had to hit the reset switch.
I installed LibreOffice 6. Writer 6 was similarly unstable and completely unuseable. Something in Ur-Text.7.docx
makes LibreOffice Writer misbehave.
I had an installation LibreOffice 5 installed under Windows 10. Editing of Ur-Text.7.docx under Writer 5 performed no better under Windows that it had under Ubuntu. I converted the file to Ur-Text.7.odt and tried again. Editing was still unstable.
The common element among these tests may be obvious. File Ur-Text.7.docx itself is nothing special. It consists of 135 pages of 10-point text divided into about 20 sections, each of which corresponds to a single outline number. It also contains about 600 comments, all but perhaps ten of them short 11-character references to another document. If I remove the comments, Writer edits the file without complaint. Evidently, the performance of a document’s in-memory representation degenerates if the document contains several comments per page.
Recent severe problems with Windows 10 update 1803 made me realize how badly I need to keep my Linux program base in place for the too-frequent times when Microsoft falls off the wagon. I will be happy to work with someone who’s interested in this problem and has some traction with the LibreOffice group.