Maintaining thumbnails in Premiere CC When I open a bin containing video files in Premiere CC on a Mac, if I want to view the video files as thumbnails, I have to wait quite a few seconds every time.  Is there a setting so that I can cache these thumbnail views somewhere?
Allocate as much RAM to Premiere as possible (in the settings), and, as Kazanaki suggested, learn to use proxies (lower resolution copies of your master files).