I am using lightroom cc on a MAC with 8 GB RAM. It is freezing frequenlly and crashing if I am editing or reorganizing files, keyword etc. The apple experts tell me I simply need more RAM to handlle Lightroom with the number of files I have. I have 30000 raw & jpg photos in single catalog. Frustrating because this computer only 8 months old and is not RAM upgradeable. I bought it based on adobe recommendation of 8 RAM. Am I doing something wrong with organizing lightroom that is need so much RAM so soon? Most of my files are on a external hard drive (seagate). Is there a problem because of slow tranfer rate. would a thundrbolt external drive be a solution.\?