Windows Ink Relative Mode causing random cursor movement

[chocmake]

Experiencing strange cursor movement behavior using Windows Ink Relative mode in OpenTabletDriver. It wanders all over the place, in wide (like 100-300px+ worth) movements.

While in Windows Ink Absolute mode there's practically insignificant jitter (like 0-1px). Also in non Windows Ink relative mode there's no such random movement and the cursor is completely locked to where the stylus is moved.

When hovering the stylus the cursor wanders in more random state, while when pressing stylus tip to the tablet surface it has closer behavior to this issue where it takes more of a broad singular direction and continues to move in that direction (I wonder if that issue shares a common root cause).

Steps I took:

• Installed the .NET requirement linked on the OTD's Windows install page.
• Installed VMulti driver via its installation batch script.
• Unzipped OTD to its own directory (and ran its portable mode batch script to store its settings to the program directory, if that's relevant).
• Ran OTD and installed the Windows Ink plugin and followed the steps outlined in the wiki here for pen tip/etc.
• The relative mode settings were left as default (10,10,0,100), though I also tested with 180 tablet rotation.
• Observed the unexpected behavior of Windows Ink Relative Mode.

Environment:

• W10 Pro
• Wacom PTK-840 (no Wacom drivers have been previously installed on this fresh Windows install, fwiw)
• OTD v0.6.2.0
• VMulti v1.0