Sims Should Do What They're Told, When They're Told

While playing last night, one thing I would like to see fixed is the time it takes for a Sim to do what they've been told to do. Because quite frankly, you tell someone to do a particular interaction with another person and sometimes it takes them so long to do it, the target person is long gone. For example, I told a Vampire Sim to drink from another last night and they were too busy chatting that the potential victim simply walked away and disappeared.