I absolutely know how this device works. That is why when I realized which video card I had, I realized the rez was too High for it.
If you remember, I was the one who was first mentioned using this device before it was released. I've used them plenty of times for other things but only since you added the code for doing the screen ratios have I been using them with Catalyst. Incidentally, I also use them with the edge blending feature as well since many of my set designs are comprised of irregular stretched spandex.
The circumstances today were specific to setting up a machine with one of the TH2G loading the new build you just released.
I thought I might have discovered a bug in the new build when I dropped the rez to what was within the range of the video card and noticed the high processing overhead.
Here is the PDF attached.