Awesome as always And yeah I know that feeling, it sucks. Maybe it's because of your compiter, it might not be able to launch Photoshop? My pc kills photoshop it lags as hell. Try to do scan or a clean up of your pc before use it. I heard that "c cleaner" (not sure if thats the name) does a great work on cleaning the pc, it cleans the cookies and some other things and it's less than 2 min'
Oh damn... :/ Then I suggest you to try to use an older Photoshop version (I think you have CS6 no? ). Maybe it wont move that slowly. Not something to old, maybe CS3 (I believe this is a pretty good version, since it's not as "heavy" as CS6, you still can use custom brushes and presure), and CS5