There is an initiative factor involved in D:OS2. It will have to be tweaked to follow the rules of D&D 5E. As I said Larian could not copy the D&D 5E combat system in their game, so it had to be a little different. To fix it they would have to take out the round robin aspect and follow initiative order by the number rolled for both allies and enemies.
Initiative in D:OS2 is actually an attribute.
https://divinityoriginalsin2.wiki.fextralife.com/Initiative
