I really enjoyed using pro 3 until I noticed I couldn't write as neat as I was able to on surface pro 2.
One of the biggest reason was that when I try to draw a straight diagonal line, the lines were somewhat jittery.
I even tried using a non-capacitive ruler to draw straight, but nothing changed.
Drivers are up to date and I even tried new batteries but still no good.
When I did some research, I could see many users were suffuring from this same problem.
I wonder if there is a fix. If not, is microsoft aware of this problem?