Preparation is the antonym of frustration
Get the script to the actors as soon as possible. Give them time to learn their lines. If they ask about their characters, talk with them and make sure they have all the character notes from the writer. The more they know, the better their performance will be.
If you can’t, then you’re just going to have to be patient with them as they learn their lines on-the-fly, while you remember to do it better next time.
Never blame them for not knowing their lines if they only received a copy of the script that morning.
