Libreoffice Writer: very slow with big documens? Tried to disable JAVA runtime but cannot?

Greetings
I am working on a large document (about 700 words) and libreoffice writer has become quite slow when performing mundane, regular tasks like back space, paste etc.

  1. I tried to disable java runtime in tools > options > advance > unclick " Javascript runtime environment’ but it does NOT de-select? When I deselect it, click apply, ithe checkmark comes back on its own? I also tried clicking OK then going back into there and its still selected?
  2. is JAVA causing the slow down?
  3. If yes #2 above, why is it not de-selecting?
  4. Know any other reason why its so slow?
  5. I have a fast laptop with more than enough RAM?

Thanks

Here you have a large document: Designing With LibreOffice
It opens within a second.
No, Java has certainly nothing to do with your issue.

First steps to take before submitting a bug

Thanks for reply BUT

  1. My documents open FAST
  2. But they are taking 2 to 5 seconds to say, erase a line, bold some small amount of text and other functions are VERY slow

Should I submit a bug or something else?

If the document is direct formatted (overriding styles with different fonts, weights, sizes, colours) then there could easily be slow down with a 700 page document. Every bit of direct formatting requires a separate description to be written and to be read.

For a different question a while ago, I pasted the Writer Guide (good use of styles) into itself to make a 1500 or 2000 page document. It took a bit longer to open fully but once open it operated at a respectable speed.

If the document is properly styled then look at the page linked by @Hrbrgr
.

BTW Java seems irrelevant to your issue

Ok how would I make my large document FAST with libreoffice?

Do I have to change formatting or something?

its’ a DOCX file

How to open files from MS-Office 2007 or 2010 (.DOCX, .XLSX,…)?

How to resolve common compatibility issues with ODF files

I will look at those documents, BUT:

  1. Do you think if I try to resolve this problem that I will lose lose of formatting, images, bolded text, indented text, bulletted text with this potential resolution?

Create a backup just in case, or/and only work with a copy of your document.

is there a way to make all the formatting DEFAULT to make it faster?

IF yes: will I lose information, formatting etc?

IF YES< how do I do the above?