5e rules do not require an Action to change weapon, BUT you need an Action to remove a shield and you of course cannot change armor.
That said, you cannot switch weapons 10 times in a turn either. It is called an "Interaction" in 5e (similar to the Free Action in other editions).
I see no reason to make BG3 more restrictive than the core rules.
Sure, I can pull out my spear and do a Rush, but that is once per Short Rest, and therefore once per combat by definition. Not a big deal.
Last edited by Baraz; 17/10/20 06:15 PM.