Hello,
I'm using this plugin with calibre 64bit on Windows 8.1 and it's very useful. But, whenever I launch the options (right click on icon > Customise plug-in...) there's a delay of 15 seconds before the config window displays. On closer inspection, I found that during this time cpu utilisation was running at 25% (quad core i5) and calibre went from 208 MB of memory usage to 3,902.4 MB (of 8 GB in total). Once the plugin's config window was closed, calibre's memory usage dropped back to 227 MB. A debug log doesn't show anything abnormal (the pc was offline, calibre opened, plugin config launched and closed, calibre closed) - this is the output:
Is there anything I can do to improve this?