MNblockhead
A Title Much Cooler Than Anything on the Old Site
In my experience, playing online has sped things up.Yeah I can get with online play slowing things up.
I think most of it is using software to support a lot of the DM's game management tasks, which could also be used in in-person games, but I didn't use software to help run my games as much when I ran them in person.
All the other stuff is just table etiquette, player engagement, and player preparedness/system master. Most of these issues I find are the same online as they are in person.
I also run long sessions, which helps prevent me from getting bent out of shape if someone needs to step away, take a call, etc. Calling for an impromptu break in the game in an 8 hour session is less disruptive than in a four-hour-or-less game.