AS the header suggests...
This feature has been experiemental at best since CS4 and it would be awesome if adobe could get it to work properly.
I have been experiementing with this option since its incarnation and thought that perhaps CC would deal with this but the fact remains that no matter WHAT option I choose,
and I have tried, timed, testes beyond 30 scenarios with different settings etc etc etc...
1) In NONE of the scenarios the result is faster than when disbling the option... If for instance enabling for processors AE will render 4 frames REALLY fast... Then take about as long as it takes for singe-frame-render to catch up to commence rendering 4 new frames really fast... And so forth...
2) In most scenarios AE will end up NOT rendering at all.
So I can understand that the "feature" is defaulted to NOT Active when installing AE first time
3) After Multi Rendering i.e. 30 Comps - the Mac needs a reboot, even after purging all memory. As the Mac will act erratically until this has happened.
The problem is that the Mac wont reboot normally. One has to hold the power button and thus crash reboot.
The Login window disappears and the a black screen appears with some cryptic messages about "Killing Process" which could not be killed...
After reboot the Log is gushed full with AE Log Messages stating: 8/23/13 8:30:17.538 PM After Effects[23114]: -[NSMenu menuID]: unrecognized selector sent to instance 0x114d96e10
It would be really nice if someone would take charge of this app and kill all the erraticness surrounding it.
New features are grand and all but all the bugs just keep accumulating and that since CS4 !