Hi I have upgraded from After effects CS5.5 to CC 2014 , and I notices that when I want to make Ram view by hitting 0 num pad key , it pauses for 3 or 4 seconds before it start caching , and it become really annoying if you want to ram preview every 1 min , I tried playing around with the Preferences /Memory/ Ram reserved for other apps , but no good .
That was not the case in CS 5.5 , is it was starting caching as soon as I hit the 0 key .
I am working on Mac pro workstation , quad core intel xieon 2x 3.2 Ghz Mac Os 10.7.5
I am guessing that you have MP rendering turned on in the preferences. Please turn it off and test again.