I've tried many tablets and I'm experiencing the same problem I had with my previous ones. The issue is this: After playing for a certain period of time, the pen nib flattens and the smoothness of aiming deteriorates, which makes aiming difficult while I'm dragging. After some time, it recovers and the process repeats. I don't know if it bothers me too much because I use a small area. If any of you are having the same problem or have experienced this, what's the solution?