Larian Studios Forums Baldur's Gate III Baldur's Gate III - General Reactions and On-hit Effects

I would also agree with including the option for popups.

Examples include use of hellish rebuke - 2 enemies are attacking my warlock - 1 has 3 hp, the other has 10hp. I would like to use hellish rebuke on the target with 10hp rather than overkilling the enemy with 3hp.
Similar for shield - I don't necessarily want to use shield against the first enemy that attacks me on a given turn.

For hellish rebuke this makes that particular spell much weaker than the version in 5e as the spell is potentially wasted if nothing attacks you after casting. You also lose a bonus action to cast it which could be spent on something else.

Re: autopausing this is probably fine as an option for single player. For multiplayer I would recommend following whatever the session host chooes rather than going with individual settings.

Another option would be inserting the character that can make a reaction into the initiative order when the option to make a reaction arises. They would then be able to chose the reaction at this stage before reverting to the opponent's turn.