[gronne]

Since LibreOffice 4.5ish I have preferred both writer and calc. Feels more robust and consistent + a lot snappier (incl. starttime).

I only use it for collaborative editing of docx and xlsx.

[maltalex]

Were you using it for documents in English?

Because I don't know about German specifically, but with some languages, Libre office is very buggy.

[ptman]

Star division was german, I'm quite sure it works well with german.

( star office -> open office -> libre office )