User interface performance is the combination of how well an interface performs in regards to processor, memory, and display as well as how efficient a user is with a particular interface.
A user interface is the point at which a user interacts, views, or controls a particular object, system, or environment.
The user interface can quite arguably be the most important component of an application. This of course heavily depends upon the type and focus of an application; however, a poorly designed and developed user interface will have a significant impact on user adoption and market penetration.
Poor adoption and lack of market penetration will prevent an otherwise brilliant application from being successful. An interface that is less ...