External discs can be ignored. There are none.
CPU-load: I'll give it a try. But wathing the task-manager shows an average of 15-20% CPU load (one core at max. 50%, one at max 40%, two at 10-15%) while editing metadata.
Calibre-database: I'use a temporary database for editing the ebooks. It's only containing the books to be edited and emptied as soon as I am finished.
No pets ...
