Currently it's set up so when 1 party member is casting out of combat, you are prevented from anyone else using a spell.
If you've just ended combat and 2 people are burning/bleeding to death, why is there such an insane delay preventing you from casting on separate characters? Is it a limitation in the Larian studio coders or just a bug?
Something that really could do with getting fixed so I'm not left having to choose whom to save.