"Debug DirectX Runtime"

[Neurosis]

(Yes, the screenshot says "TMUnited", but this is happening to most games I am playing currently)

Whatever this is, it's impacting on Audiosurf's performance, and I think Windows itself (there are periods when my system slows down, the mouse isn't as responsive... etc). I tried googling it but by following some of the links in the first search result, I got a link to the DirectX SDK or something like that, and trust me I do NOT want to download a 400+MB thing just to fix this.

the video I just uploaded should help show you what I mean by 'impacting'.
http://au.youtube.com/watch?v=lC_3DmBmGZM

So yeah. Any ideas?

[Pwntastic]

Install this
Then open it up and jump to the direct3d tab and check the 'use retail version' rather than 'use debug version' as in