With just that amount of information, it sounds like you don't have much memory. How much is "not much"? 8 Gigs or less.
Sorry guys, I'm new to posting here.
After Effects CC 188.8.131.52
Premiere CC 7.2.2
Mac OSX 10.9.2
3.5 GHz 6-Core Intel Xeon E5
32 GB 1867 MHz DDR3 ECC
Under Preferences > Media, I have my Disk Cache set to the SSD and it's Maximum Cache Size is at 60 GB (I've just bought an external thunderbolt drive to cache to but I haven't installed it yet).
Under Memory I have the RAM shared by Pr and AE set to 26 GB, with 6 reserved for other apps.
Should I post more info?