Libre/Open-Office perform a DNS request on opening the first document. The delay results if the name resolution fails. The workaround Lordinux mentioned holds only for the special case of localhost. I encountered the problem on my laptop but modifying /etc/hosts did not solve it. Using wireshark it turned out that Libre/Open-Office wanted to resolve the cups server since the default printer was set to be the one in the office. This DNS request failed at home since the business intranet could not be reached, therefore causing the issue. The easiest solution in this case was to set the printer to a local one, e.g. cups-pdf.
Libre/Open-Office perform a DNS request on opening the first document. The delay results if the name resolution fails. The workaround Lordinux mentioned holds only for the special case of localhost. I encountered the problem on my laptop but modifying /etc/hosts did not solve it. Using wireshark it turned out that Libre/Open-Office wanted to resolve the cups server since the default printer was set to be the one in the office. This DNS request failed at home since the business intranet could not be reached, therefore causing the issue. The easiest solution in this case was to set the printer to a local one, e.g. cups-pdf.