After Effects CS6 running painfully slow

i working on composition in adobe after effects cs6, , it's running painfully slow. i've tried mess of settings in preferences, , lowering quality of preview. still feel i'm running terribly slow considering speed of computer. here's i'm running:

 

mac pro desktop

  model name:          mac pro

  model identifier:          macpro5,1

  processor name:          quad-core intel xeon

  processor speed:          2.4 ghz

  number of processors:          2

  total number of cores:          8

  l2 cache (per core):          256 kb

  l3 cache (per processor):          12 mb

  memory:          24 gb

  processor interconnect speed:          5.86 gt/s

 

video card

nvidia quadro fx 4800:

 

  chipset model:          nvidia quadro fx 4800

  type:          gpu

  bus:          pcie

  slot:          slot-1

  pcie lane width:          x16

  vram (total):          1536 mb

  vendor:          nvidia (0x10de)

  device id:          0x05fe

  revision id:          0x00a1

  rom revision:          3426

  displays:

syncmaster:

  resolution:          1680 x 1050 @ 60 hz

  pixel depth:          32-bit color (argb8888)

  display serial number:          h9lpa06272 

  main display:          yes

  mirror:          off

  online:          yes

  rotation:          supported

syncmaster:

  resolution:          1680 x 1050 @ 60 hz

  pixel depth:          32-bit color (argb8888)

  display serial number:          h9lpa06265 

  mirror:          off

  online:          yes

  rotation:          supported

 

hard drive

wdc wd1001fals-41y6a0:

 

  capacity:          1 tb (1,000,204,886,016 bytes)

  model:          wdc wd1001fals-41y6a0                  

  revision:          05.03d06

  serial number:               wd-wcatr2482149

  native command queuing:          yes

  queue depth:          32

  removable media:          no

  detachable drive:          no

  bsd name:          disk0

  rotational rate:          7200

  medium type:          rotational

  bay name:          bay 1

  partition map type:          gpt (guid partition table)

  s.m.a.r.t. status:          verified

  volumes:

  capacity:          209.7 mb (209,715,200 bytes)

  writable:          yes

  bsd name:          disk0s1

mac os x:

  capacity:          677.53 gb (677,531,090,944 bytes)

  available:          421.16 gb (421,160,968,192 bytes)

  writable:          yes

  file system:          journaled hfs+

  bsd name:          disk0s2

  mount point:          /

untitled:

  capacity:          322.33 gb (322,328,068,096 bytes)

  available:          183.98 gb (183,976,169,472 bytes)

  writable:          no

  file system:          ntfs

  bsd name:          disk0s3

  mount point:          /volumes/untitled

 

 

the composition i'm working have 1 camera, , 45 small 3d comps built it. no lights. , of footage , data on mac osx hard drive. has tons of space available can see. i've played around settings in after effects. nothing seems speed things up. ideas??

if you're using ae's new raytracing feature, need aware makes rendering painfully slow.  no, excruciatingly slow.

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