We have separate drag movement thresholds, and one is specifically for
tablet pen movement. A movement is not considered a drag (when using
left click select) until this amount is detected. This PR decreases
that amount with pen pressure. This results in more immediate and
responsive behavior that feels quite natural. Whether using RCS or
LCS this also similarly reduces the lag when dragging on numerical
inputs and sliders.
Pull Request: https://projects.blender.org/blender/blender/pulls/136685