As of version 2.0.42 this extension maxes out my CPU usage every time I load a new webpage, regardless of if it can fill out anything on the webpage. I would hope that this issue could be resolved by choosing to activate it when needed, rather than it's current always on state. I will continue using this app because it's still useful for it's purpose, but needing to enable and disable it every time I want to use it is not a good user experience.