Honestech nScreen Deluxe - Manual (Page 15)

nScreen ™ Deluxe 15
4.4. Projection mode settings
nScreen Settings can be accessed by clicking the Settings button on the main
screen or by right-clicking the tray-icon in the bottom-right corner of your Windows screen.
Resolution
Auto: automatically selects the best resolution setting based on the speed and type of your PC.
The lower resolution option will provide smoother video streaming.
Click the [Apply] button to save any changes made.