Hello, I noticed on some areas of the screen, usually closer to the sides of the screen, when you use the pen, there feels like there's some rough spots, like the pen tip is hitting a bit of rough patch. If you run your fingers through it , it's completely smooth. I tried using a micro fibre cloth but didn't help, and cleaned the tip of the pen as well. The middle of the screen however is very smooth. Anyone experience this when using the stylus?