I have a question in referenc to render speed.
Currently using Cs6 pre - C.C.
Win7 Pro O.S
i7 3770k processor 3.5 Ghz
16gb of 1600 mhz Ram
Using an SSD 1/2 full for O.S and Adobe Software
Another SSD to park read assets, that is a 1\4 full
Then write to an HDD 7200 RPM 1/10 full if that.
My project was that of a 1080 MTS, rendered out to then be jpg sequence
to track in Mocha.
Added a PNG to tie to track point ( a sign for a building)
One other JPG for a 'patch' to cover a track point.
One Png to cover another track point.
Added a CC particle to create a dust storm, rather to enhance a dust storm; placed on a Solid for the first 7 seconds.
Added a Lens Flare on a solid for the last 5 seconds.
Render at 16bits motion blur on for sign, lend flare, and particle system for dust storm.
Rendered out to an AVI Best settings...
8.5 hours for 13 seconds of timeline !
And exactly what is your question?
Try turning off multiprocessing and see if it improves.