Hi,
I just wanted to say Thanks!
This thread has so much information.
But it seems as this is not yet (easily) ready on AMD GPU's
Maybe in the Future there will be neutral Monitors with backlight strobing for a smoother experience.
btw The source code for the MemTestCL is on Github:
https://github.com/ihaque/memtestCL
and here is a link to a discussion where they fixed this bug!
http://devgurus.amd.com/thread/159124
If someone could fix it and compile an .exe i would be gratefull.