LibreOffice - How to disable the quickstart feature?
The quickstarter feature will launch LibreOffice at the same time as your operating system (startup programs), which also means that part of the Office suite will be loaded in the memory.
To disable this feature:
From any LibreOffice application (Writer,calc..), click on Tools > Options.
Go to LibreOffice > Memory
In the "LibreOffice Quickstarter" section, Uncheck "Load LibreOffice during system start-up".