Why the first start of an app is slow in CL?

Why the first start of an app is slow in CL? Any app thinks a little, before starting at first start, but then the next start appears to be normal. Is this because the DE is Gnome, or because of it is a bundle?

Is that from flatpak?

The standard ones that came with the live iso.

Firefox takes a bit longer for initialization. What are the other applications?

Take your pick. Any app.

I didn’t notice any lags in initial launch. To be specific, are you feeling the lags in the Live CD environment, or in a Clear Linux OS installed on a hard drive or SSD?