I was going to animations, and i wanted to time them transitions to a really nice piece of music, however, whenever I go to preview in realtime to time the transitions, many times doesntplay in realtime which messes up the timeing (the timing is for dips, so using the waveform is useless). Please Help!!
1. make sure you are using the latest updated version 13.8.1. a great improvement in performance in the latest release look here: After Effects 2015.3 - My Favorite Features on Vimeo at 00:57
2. If that does not work, see if hardware acceleration in the preferences is turned on and if it is, turn it OFF.