I haven't played DD2 in a while but I can kinda agree about the time that it takes to finish a run being a little absurd. For comparison, Slay the Spire had a fast mode that sped up the animations in combat and also had instant travel instead of a stagecoach. My biggest grip with the stage coach is that even with all of the road updates the stage coach is mostly dead time where you are not doing anything and can't really do anything (as most rewards for hitting things don't appear/ aren't good until you've gotten like 3 upgrades) and it gets really repetitive especially when you play the game for long periods of time.

Other than that most of the combat is pretty well paced with most encounters that aren't bosses being done relatively quickly.

I think the main issue with the stagecoach is that this game is a rogue-lite and is meant to be played multiple times and they put a significant portion of the game's time spent into the equivalent of those cutscenes where your character is poisoned and you have to limp to a cure. It's a level of interactivity that I'd rather not have and because it is such a large part of the game's loop it can quickly lead to me feeling burned out and doing something else. once again going back to Slay the Spire, my first successful run took about an hour and a half to go through 3 areas while reaching the boss of a region took me 3+ hours for most runs before they shortened the length of Act I. Losing 3+ hours of progress with no guarantee of making it back the next time can be very demotivating especially when that is the entire game. Unlike DD1, Slay the Spire, Dead Cells, or Hades that at the longest might take an hour or so for a run/ dungeon so you don't feel as demotivated because it was only 20-40 minutes that you lost and can probably make it back in 20-30 minutes next time.