Are your diagonal strokes not smooth?
This is a known issue with some Windows tablets and Android devices, and is not specific to Sketchbook. It is caused by how the sensors in the display are reading finger or pen input on angled movements. Slower strokes will create the wobble more so than fast strokes.
Workarounds
- Use faster gestures when drawing on angles, to reduce the effect
- Use Predictive Stroke or Steady Stroke. These features will re-render your strokes and can smooth out the wobble. However both are a post-stroke computation by the app, so using them can introduce lag on longer strokes. Predictive Stroke is designed to detect the user’s intent to create straight lines, rectangles, triangles and ellipses, which may also occasionally produce results that are not intended.
