I believe I had the same issue?
Scrubby sliders operated with delay or you needed to move pen past the text field borders before it reacted.
And the slider were delayed as well.
I solved it and tablet works correctly now.
I am pretty sure that the last preference change I made to solve it was checking the "force proportions" box in the "mapping" tab for the Grip pen.
When I looked closely on screen it seemed that the positioning of the pen was off a bit causing issue with the normal sliders/scrubby sliders.
I think the screen mapping got thrown off kilter because I changed video drivers to get GPU working.
(This was for a Win8.1 laptop with a Intuos 5, I did not have any issue using same tablet on Win7 desktop)
Thanks for a good tip bhousto90! ... unfortunately that didn't do it for me.