Intuos4 TERRIBLE stutter

[CubeMatrix]

Hi..

I thought it was a Wacom driver issue, but my Intuos4 works fine in all other paining and drawing applications.
For some reason I begin to get a stuttering and lack of pen fluidity. As if the program were unable to keep up with my pen movements.

Please advise... If This can't be fixed I'm afraid I'll need to request a refund.
I'd HATE to do this since I LOVE the program.
To note, I didn't experience this terrible stuttering while using the trial version it's only after I paid and registered that the problems started.

Please advise.

Thank you.

[support]

Try to enable: Menu-File-tablet settings-coordinate mouse mode