Now that you have it working...
The setup.ini file has a vsync setting. If the setting is "vsync=1 then gg is limited to reporting FPS of no greater then "60" or less.
Change the setting to vsync =0 then gg will not be limited in the FPS reporting of real FPS, may surprise you.
Windows 10 creator,64 bit| Intel i7-7700 @3.60GHZ Quad|CPU PASSMARK 10,794|Memory 16GB |NVIDIA GEFORCE GTX 1070|GPU PASSMARK 11,071