I am using a UX301LA Zenbook with Intel Iris 5100 display adapter running Win 8.1. With this setup, some applications (e.g. EM Client Mail) cause the screen to flash constantly when in full-screen mode, but work fine in window mode. Other applications (e.g. iTunes) causes the entire screen to go blank (white) when in full-screen mode. Other apps (e.g MS Office) are OK in full-screen. Have tried both the latest Asus-certified display driver and the latest Intel version(10.18.14.4170). Both have the same problem. Any ideas??