When I run Litchi I make sure "DJI Go 4" is not running, but there are other apps that are DJI related, must I force quit those also?
Like the launcher, is that supposed to run with Litchi?

I just close all the running apps, and fly with Litchi.  I don,t close all the system background apps, if that is what you are asking? No problems so far, doing it that way.

There are 4 other running applications that run with Litchi running, see above picture in the first posting.  They are 1) Settings, 2) Launcher, 3) DJI Update, and 4) System Upgrade.

Are there any of these other 4 programs that are running when Litchi is running that should be stopped?

Nope, i dont stop them from the settings, running applications, services menu. I just swipe up, close all background apps.
So the easy answer is no, i do not stop all the above processes before using Litchi, only the Go 4 App.