No, the application isn't dangerous for your computer performance because it has no implication with the operating system. This is a standalone application that's used to print labels and that's it. It consumes memory and space storage on your hard drive, but this is normal.
You can install and use the application on your computer without worries that it might downgrade the performance.
For additional information, access the following website: http://www.cyberlink.com/products/labelprint/overview_en_EU.html?&r=1