I have a fix that I found online and my god it works wonders man!!!
Go here http://www.xtremesystems.org/forums/...ulldozer-issue
Download Orochi-CEG in the first post I got a .zip file just open it and run the Orochi.exe and follow the on screen message all you should have to do is hit any key.
It will close launch Deus Ex HR and ENJOY!!!
*NOTE: You will have to restart this program every time you turn off your PC and Turn it back off as the setting are erased.
Also the fix is only for AMD FX 4/6/8-core processors!
I'm getting a stable 41FPS in game now instead of 9-19FPS.