The app is great, works on old and new devices. However, its settings are not very intuitive, and the best settings for performance are not the default. I suffered the 30 Hz refresh rate for long before I noticed the option to use my tablet’s native refresh rate. 30 Hz vs 60 Hz is a night-day difference. There is still a little lag with the 60 Hz RR, but much more acceptable than the one with 30 Hz. Browse your computer’s AND tablet app’s settings thoroughly for best use. Too bad no USB support.