It takes upwards of 10 second to save certain websites to Capacities. I wait for the extension to finish loading before doing other tasks in the browser, since I've experienced missing or duplicate website saves, if i minimise the extension window and change tabs to work on other stuff. Same if i close the tab before the extension has finished loading.
The whole purpose for this to be great is 'Fast input to Capacities, capture while you browse'. Currently it breaks my flow.