I've created a CC for one of my clients that we use to load and cache all of the frames needed for their wipes (it's a truck, and they are setting-up at least twice a week). Like the other guys here have pointed out, the trick is to allow each animation the time to load -- so what I've often done is grabbed a stopwatch and timed how long it took to load an animation so I could put the correct pause duration into the CC. In all, this CC takes about 9 minutes to run, ending with setting-up the MEs and Keyers so there is a noticeable change upon the completion of the CC running. I call it "SETUP", and have it tucked at the very end of CC bank 8.
It's not super-glamorous, but it is helpful especially to people who don't really know the ins-and-out of the switcher.
#Carbonite