Wintab : stroke jitter at low zoom levels when drawing slowly
I'm using Photoshop with a Wacom pen display (Cintiq Pro).
When Photoshop is configured to use Wintab, pen strokes may show noticeable jitter at low canvas zoom levels (for example, 12.5%), especially when drawing slowly.
Symptoms:
- Most visible when drawing smooth diagonal or curved lines
- Appears similar to low-resolution screen coordinate input
- Stroke position accuracy is reduced
- More noticeable at lower zoom levels

The pen tablet seems to be behaving as if its tracking accuracy has dropped to the level of the screen resolution. In terms of actual hardware performance, the accuracy should be the same as Windows Ink.
System:
Wacom Cintiq Pro, and dual-monitor setup (total 3 monitors)
wintab enabled
Photoshop :from older to recent version all
