It takes two minutes to open a 300+ page docx file with many comments (25.8.2). ODT files are a bit faster but both formats are slow to navigate in. Is this a known issue, and is there any way to improve performance?
There are two factors in your question:
- your document is DOCX, which requires conversion to internal format before being displayed or edited
- most important, your formatting routine has a huge impact
Among common mistakes, you have erroneous usage of line breaks instead of paragraph break (most document processors collect paragraph contents before rendering it; therefore if your “paragraph” spans several pages, it slows down conversion and rendering). Tables also have an impact if cells span several pages. A high number of images will also deteriorate performance. Last, DOCX has no notion of character styles resulting in all typographical variations being applied as direct formatting (no sharing of formatting; all occurrences are unique).
I have never noticed an effect with comments but it may depend on what you call “many” comments.
For better diagnostic, give us an idea about the structure of your document and your formatting habits.
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