I am using AE 2014 CC on a 2008 macbook pro w/ 4 gigs of ram. I am rendering a clip that contains a 30 min wav file, a pre-made audio reaction ring, a 30 second mov file that has been looped, a black background and font. It takes only 3 hours to render around 20 mins of the clip, but after that it slows down substantially. It has taken almost 20 hours to go from 20 mins to 26 mins, and is still adding time and slowing down.
Is this normal behavior? I don't mind waiting a few days or even a week but I am concerned that it may never finish if it keeps slowing down?