What do you see happen at your D&D/RPG table that wastes time and slows down the game?
(1) when someone makes a single line joke as a throw away joke, but someone wants to halt their action to discussion how the joke doesn’t apply to this situation
(2) players that always seem to forget how their characters work in any situation and need the same abilities and rules reexplained at least once per session
(3) players who forget the story context of every encounter and need it reexplained about half way through when he/she forgets what the goal is
(4) players that have a different arrival time due to personal responsibility, I get it, but it slows the game down drastically as they arrive since another recap of last session needs to be done, then a side bar to being the player and character up to speed
(5) when plans are being made for in character actions, but some players will continuously talk about how every plan anyone suggests is for crap, but never offers alternatives , just keeping us in planning discussion longer and longer because we can’t agree because someone is counter arguing everything
(6) in the past I’ve had DMs that play very adversarially. This often led to pacing issues as we could never actually accomplish anything because the DM got his thrill by giving us a random encounter for every five steps we took ( yes, that’s hyperbole but not far off) it led to player frustration which would deflate enthusiasm which in turn just made things move a lot slower because ‘nothing really mattered as the dm wasn’t going to let us doing anything anyway’