On UbuntuStudio 19.04 ardour launch time was average.
I had to install KxStudio repositories to access most plugins I use, I updated Ardour, it got… very slow at launch.
just installed UbuntuStudio 19.10, did not add the KX repositories, just installed .deb packages downloaded from there, and Ardour got very, very fast.
Launch time means the time between the click on the ardour menu and the first Ardour Gui window appearing.
I’m not asking to change anything, just want to understand what I did wrong and wether or not I should add the KX repositories or script their downloads and use dpkg -i as those packages (lv2 plugins and instruments) have almost no dependencies.