Yeeeah.

I have this issue with my Intuos AND Cintiq 13 HD but its more so the Dragging of the Windows page.
I can scroll down without having to hold the arrow key or click it.

It's annoying as fuck.

Never had this problem in Windows 8 :/

I can tell you what Wacom told me and you can see if it works? ;;
otherwise idk.

If you wouldn't mind! I'm willing to try just about anything at this point orz

Intuos drivers are finicky with Windows 8 and higher. There could be a lot of factors in play that could be causing this, but first, let's try to narrow it down even further:

1. Did this issue just start happening, appearing as it came out of nowhere OR has it always happened?
2. Have you tried other tablet-enabled programs, like SAI (Versions 1 and 2), Clip Paint, Photoshop, etc and does it happen in every application?
3. Have you checked Wacom's diagnostic to see if there is a hardware issue?
4. Did you try plugging in the wireless adapter in a different USB port?

I can't remember if Windows 8 has this or not, but open up Task Manager (Ctrl+Shift+Esc) and go in the Services tab. Look for anything that has XBOX. If they're there and running, stop those services and see if your drag lag is gone.

A friend of mine had a similar issue a while ago and honestly the solution for them was pretty silly and simple. Just remove the pen nib and lightly smack around the pen a bit.
It might be an issue with the pen sensor instead of the tablet, and doing this should get it back in place and remove any dirt that may be interfering with the connectivity.