line distortion

Recently I’ve noticed a line distortion when drawing on my Cintiq. When I attempt to draw an oval or circular like shape, one or more brush strokes appear as straight lines. (See attached). I’ve been hearing that the latest Wacom driver is the culprit, but there is no update past that.

Cintiq 22HD

MacOS High Sierra

NVIDIA GeForce GT 640m 512 MB graphics

Any suggestions on how to correct this issue would be greatly appreciated.

Please uninstall your current tablet driver and shut down,
then restart the system. Install this Wacom driver instead:
https://support.wacom.asia/en/content/windows-driver-6324-5