“Sliding” is what caused my notes to stick. I would check the cable, and/or the USB port, as well as the laptop connection. These ports really take a lot of abuse. If you accidentally hit the connection, the little blue male connection can easily be bent just enough to make partial connection, thus sticky notes with a large midi send like a slide. There are some products made to insure a healthy connection I used several years ago when I repaired small circuit boards. If I can find the product I used, I will post it here. It was a life saver many times it’s worth.