Combat issues

Hi, I have a bug and a concern. I just started a new campaign and in the first combat, Franz forgot who was an ally and who is an enemy. He speaks about the enemies being down with concern and instructs the party to help them. Eventually, my NPC ally did exactly that and healed an enemy.

My concern is with the death save mechanic. Combat seems to never end. I have forced each enemy into unconsciousness multiple times and each one just keeps waking back and up and attacking again. At the very least, when all enemies are down, the combat should be over. It has made the engagement more tedious than fun, unfortunately. It would be better if the enemies either don't get death saves or, at the least, Franz doesn't give me the details of each of their rolls. It would be more seamless if that occurred in the background.