I’m sorry but I have to disagree…
The slide locks back just after the 0:17 second mark and goes into battery again just before the 0:21 second mark. To be polite I’ll call it 3 seconds.
As a former competitive pistol shooter, and a range safety officer who shot and worked National level action pistol competitions for a decade… a 3 second reload is an eternity. Top level shooters do a slide-kick reload in roughly one second. Average shooters are in the 1.5-1.75 second range. Revolver shooters are generally in the 2.5-3.0 second range.
I will say this… the reload was smooth. Unfortunately he doesn’t appear to realize he’s empty for about a second before he even starts the reload.