After Effects - Extremely Slow scenes

Hi all,

I'm loving the developments with Character Animator in the past few weeks.  Many thanks to all the team.

I've just started bringing scenes from CC to After Effects and - well, After Effects is moving S--L--O--W....

Everything lags to a huge extent.  I'm working with a Surface Pro and my Character Animator scene is recording at 24fps.

When I bring it in, it becomes near impossible to work with, it goes that slowly.

Are there any tips - for instance, in music/sound, a lot of programs have a function called "Freeze" that allows the computer to process a layer of sound with plug-ins and freeze it/momentarily render it, so the computer doesn't have to use all this processing power each time.

It may be more of an After Effects question, but is there a way to do this with After Effects?  At the moment it's moving so slow, it would be impossible to do any video editing without the patience of a saint and all the time in the world.

Many thanks,

Rob