Like most plugins (and photo editors in general), Background Remover may run a little slow if you're working with large or complicated images and you don't have a lot of RAM on your PC. Overall, however, the plugin is extremely stable and seems to manage memory well.
An extremely useful feature of Background Remover is that you can view all modifications in "real time" so you don't have to keep passing back and forth between the photo editor and the plugin.

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When removing the unwanted elements, you can opt for either a transparent or a solid color background. Another nice feature is that you can switch between these options while still in the plugin interface before applying them to the final image. If you elect to use a colored background, you can choose from a number of predefined colors or define your own custom shade.

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You can also view the original source image at any time and even choose to start all over without leaving the plugin interface if needed. If you need more assistance on understanding the controls and the background removal process, you can click on the
Help button to access the included user manual that also contains detailed tutorials for several different types of image extractions.