# Paint brush requires large movement before stroke begins — Wacom Intuos M tablet

**URL:** <https://discourse.slicer.org/t/paint-brush-requires-large-movement-before-stroke-begins-wacom-intuos-m-tablet/46879>\
**Category:** Support\
**Created:** [April 30, 2026, 5:53pm UTC](https://discourse.slicer.org/t/paint-brush-requires-large-movement-before-stroke-begins-wacom-intuos-m-tablet/46879 "2026-04-30T17:53:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Alexander\_Pfeifer](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alexander_pfeifer/32/80824_2.png) [@Alexander\_Pfeifer](https://discourse.slicer.org/u/Alexander_Pfeifer)\
**Post date:** [April 30, 2026, 5:53pm UTC](https://discourse.slicer.org/t/paint-brush-requires-large-movement-before-stroke-begins-wacom-intuos-m-tablet/46879/1 "2026-04-30T17:53:07Z")

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Operating system: Windows  
Slicer version: 5.10.0

When using the Paint effect in Segment Editor with a Wacom Intuos M tablet on Windows, the brush requires a large physical movement before it starts painting. A short movement is treated as a single click. With a mouse this doesn’t happen. Already tried: `slicer.app.startDragDistance = 1`, `effect.setMinimumPaintPointDistance(0)`, `effect.setDelayedPaint(False)`, Windows Ink off, Wacom driver settings adjusted where possible. The threshold appears to be in the C++ Paint effect and is not reachable from Python.

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**Author:** ![ThomasVanParys](https://avatars.discourse-cdn.com/v4/letter/t/7ea924/32.png) [@ThomasVanParys](https://discourse.slicer.org/u/ThomasVanParys)\
**Post date:** [May 1, 2026, 8:27am UTC](https://discourse.slicer.org/t/paint-brush-requires-large-movement-before-stroke-begins-wacom-intuos-m-tablet/46879/2 "2026-05-01T08:27:21Z")

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I use the same tablet as you and encounter this problem for manual segmentation. Would love to hear any solutions to this (other than manually removing the over-segmented area!)

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [May 4, 2026, 7:57pm UTC](https://discourse.slicer.org/t/paint-brush-requires-large-movement-before-stroke-begins-wacom-intuos-m-tablet/46879/3 "2026-05-04T19:57:31Z")

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There is no such property as `startDragDistance` and I’m not sure how you got the effect. Anyway, the correct code snippet (from [this post](https://discourse.slicer.org/t/segmentation-drawing-tablet/842/37)):

```auto
paint=slicer.modules.segmenteditor.widgetRepresentation().self().editor.effectByName("Paint")
paint.delayedPaint=False
paint.minimumPaintPointDistance=3

```