Impress Show Mode starts in Edit Mode

I want to show a presentation on a RaspberryPi. So I want to start OO Impress in show mode.

The problem is that the presentation has more than 1K slides, and even in show mode, LibreOffice is open as in edit mode, tries to read the slides, create snapshot of every slide to show in the slides part of the window, etc…

In a powerful laptop, it happens really fast, but in a RPI with a 1K presentation, it takes even a minute.

Is there a way to remove all these initial “Edit mode” steps??

Is there another solution to show the presentation on a device with not too many resources?

Next is the command I use to start the presentation:

libreoffice --nolockcheck --nologo --norestore --show presentation.odp