I downloaded the latest version of the MonitorControl from the release section. As soon as I start the app, the cursor becomes very unresponsive. The app works (at least the brightness does), and the rest of the system is fine, as the youtube video I'm watching doesn't show any signs of lagging or stuttering.
I might do some digging on my own into this issue, but if you can find out why, it would be awesome. Please let me know if more information for debugging is needed.