1. Copy Diablo III directory to a new directory however many times you need
2. Create desktop shortcut that ties to "Diablo III.exe" (i.e "C:\Program Files (x86)\Diablo III Two\Diablo III.exe")'
3. Put -launch on end of command
I.E ("C:\Program Files (x86)\Diablo III Two\Diablo III.exe" -launch)
Voila, it's magic.
Disable limit on foreground/background fps in options (uncheck both FPS settings)works but have MEGAAAAAA lag when i join game both acc.... :/