I have the feeling there's a misunderstanding about the issue. The problem is performance, not a presence of a scrollbar. To illustrate the problem, I've uploaded a video which demonstrates the delay that occurs when scrolling. It's semi-clearly visible, that the text is still scrolling a while after the scrollwheel stops moving.
Please note, this delay ONLY occurs during a Remote Desktop Connection. On a regular desktop PC there's no delay.
We think the cause of this delay is the animation/smoothing of scrolling. This causes many screenupdates which simply is not suited for a RDP connection. So lowering the updates (thus disabling the animation) should fix the problem. We just need to know how to do this, if at all possible.
http://www.youtube.com/watch?v=g-ZyWjIDGBo