I'm having the same issue as this poster, his never was answered or figured out. I don't have the drop down menu that lets us choose either GPU or iGPU for a program, anyone know what gives? I'm trying to get my Twitch app and browser to run off the iGPU
http://www.tomshardware.com/answers/id-2049783/integrated-graphics-programs.html
http://www.tomshardware.com/answers/id-2049783/integrated-graphics-programs.html