ISSUE: App goes unresponsive frequently when opening file from Flash Drive
FIX: Don't open your files directly from a flash or USB drive. The app uses database files that have journal and rollback capabilities so will keep trying to access the flash drive which is too slow.
Option 1). move the file to your hard drive. Open it and edit it on hard drive. Copy back to flash drive when done.
Option 2). move your files to a cloud drive like iCloud, OneDrive, Dropbox, etc. and use that as your means to share them between computers. (i.e. quit using a flash or thumb USB drive for sharing files)