I know many are having a similar issue. but for me I have an AMD Radeon HD 6900M series + Integrated Intel HD 3000 on Windows 10. My laptop is an Alienware R17x and for some reason whenever I try to launch a game it ignores my AMD and goes straight for the inferior Intel. I have tried disabling the Intel through device manager and while this does allow some games to avoid crashing and freezing my laptop at the start, I am still encountering significant frame rate drops without them working in unison. I have also tried uninstalling my Drivers and reinstalling 15.7.1 but to no avail I still have significant instability and frame rate issues. Any help would be appreciated.