I'm curious to know if anybody is using this tool to force vSync and/or Triple Buffering on. There are some threads here at avsim together with FSX/DX10 but it obviously works with DX11 too.
To read this thread at the guru3D forum may help too. http://forums.guru3d.com/showthread.php?t=378546
I tried it and it works for me even with Windows 8.1 and I notice a quite nice increase in FPS but still not sure if it's true in any case. I've vSync/Triple buffer switched off in P3D v2 and switched on in nVidia CP but at guru3D they say this only works for OpenGL - I don't know.
This explanation about vSync/Triple Buffering is also very interesting to read. http://hardforum.com/showthread.php?t=928593
Spirit