Is there a tutorial about what to do when PS and bridge are slowing. I have an iMac, 8 GB of memory and over 600GB of hard drive space. I have gone into PS and adjusted the preferences and deleted some of the history. If I try to have LR, PS and bridge open, it slows dramatically. It worked fine the other day. I have closed LR but bridge still hangs and PS will randomly hang when I try to use a tool. Is there a cache or something I need to delete?