It’s been a while since I played 5e, but if I remember correctly you could do some fuckery with Haste and/or Sorcery Points if you don’t follow that rule.
It’s not a problem for a videogame, but D&D5e (actually most D&D editions) is not a balanced game at all. In fact the only RPG that I’ve played and would call balanced is Pathfinder 2e.
So I was not expecting Baldur’s Gate to be balanced at all given it’s based on D&D5e.