In contrast 5e uses 6 second combat rounds, during which you can nominally:-
- move about 10m ( or rather your moement rate )
- cast a spell/hit/perform other significant action
- possibly perform some reaction
- possibly perform one or more bonus actions ( particularly in Larian's implementation )
- interact with a single object in the environment as a free action
which is all a lot more frantic than is actually reasonable for 6 seconds, in real life.
Actually, you'd be surprised...
There are a number of people who have taken the time and effort to make videos depicting the real-life implications of the 5e rules and limitations, and when actually acted out in real space with real people, they are *surprisingly* valid and realistic.
Here's a video of someone performing a few six second rounds:
https://blumineck.tumblr.com/post/6...ng-my-quest-to-post-my-content-so-othersIt's quite feasible without being frenetic or taxed.