Need help. I am running a 27 in imac with 16 gigs of ram. Photoshop runs really fast, except when opening files. It takes 5-10 minutes to open even a small file of 1 meg. I cleaned and validated all the fonts and removed all questionable fonts. Reset preferences and still have problem. Slow to open and in force quit "Photoshop not responding" At this point should I uninstall and start over.
What are the performance Preferences?