After some digging around, I figured out how to add a slight delay to the application autostart in @c63445ce since it's not built into the GUI (from what I could find).

Adding `bash -c "sleep X && COMMAND"` to the Exec line adds a delay so that NetworkManager can come online. I noticed that my autostart apps were launching before my network was, so the apps were throwing errors and I would have to relaunch them. So I added ten-second delays to them and now things are great. 

 Still not sure why this needs to be done manually per app in their autostart files in 2023 when other DEs like Cinnamon and I think MATE have them built into their GUIs (from what I could tell), but here we are. 

I tried a bash script, too, but this worked just as well since Plasma already had the autostart files made when I added the applications to the autostart system.