I think most rpg's get this all wrong. most assume all fights just last a few seconds, which they can, but even small fights can also last 10 or even 20 minutes. Someone could just be defeated in a few short parry and repostes of a few seconds, but melees can also last 10s of minutes if both sides are beoing cagey or cautious. As a point of consistency it makes sense why a lot of systems like dnd might use 6 second increments, but really I feel like either 10-15 second increments or somehow making an exponential curve would be more illustrative (first turn is 5 seconds, second turn is 10, 3rd turn is 15 4th turn is 30, and each additional turn is 30, or something like that). where if the combat is over in 1 round, thats where the 1/2 samurai slash sort of scenario occures, but each additional round simulates an ongoing skirmish.

heer is someone talking about it: https://www.youtube.com/watch?v=QV8t44YgEFE

I personally like the idea of assuming 15 seconds, since you are liable to get to a minute or a quick combat might only take part of the first round. It also allows more things to plausably happen in the background while you fight or for you to plausably defend a point for a reasonable amount of time.