So your issue is that a video game is a video game.

Considering that the most popular mod for Divinity original sin 2 is the one that makes everyone run faster, i dont think that a huge ass world full of nothing so the encounters feel more "subtle" is something that the fans want.

And quite frankly i also dont think that this is what the infinity engine games were like. Look at the immense ammount of enemy packs scattered around icewind dale maps (that miraculously dont notice when someone ten meters away from them is getting killed)