Unlike a pen and paper system, where there is essentially an instantaneous feeling to drawing, a drawing tablet being a digital system where many components are processing and communicating data is always subject to some form of lag.
In the context of drawing tablets, I use the word log to describe how things are "following" the physical pen.
There are two kinds of lag
The details on lag are described in this video series:
Drawing tablet lag - Episode 1: Basics (https://youtu.be/CRwzPJPA_5A) Apr 28, 2023
Drawing tablet lag - Episode 2: Pointer lag (https://youtu.be/tNj6vxx0FWM) Aug 7, 2023
Drawing tablet lag - Episode 3: Position smoothing in the tablet firmware and tablet driver (https://youtu.be/sWvluY9w-Bk) Aug 7, 2023