Yes, both examples should show exactly what it is that I am describing. Keep in mind that in all of these I am keeping the left mouse button clicked: that means I'm not taking my finger off the trigger.
One of the videos is in a server that I frequent without problems, the other is from the first mission in Italian SP Campaign.
I'm not pressing V (default and my current key for switching fire modes) either.
I have tested this with all manner of automatic weapons in-game, and this persistently happens regardless as to map or weapon.
Semi-auto weapons like sidearms and auto-loading rifles fire as quick as I pull the trigger so no issues there.