I recently bought a second monitor to run a dual screen set up on my PC. My first monitor is an HP 21" 1600x900 resolution 5ms latency, 60hz refresh rate, LCD. My new monitor is a 23" H1920x1080 resolution 2ms latency, up to 75Hz refresh rate, LCD with LED backlit.
Both monitors are set to 60Hz, and each to their max resolutions (stated above) and they each work fine when they are plugged in seperatley. But when they are both plugged in at the same time, the screens will randomly flicker and/or tear. Not super frequently but frequently enough to be annoying. And only when I am using Windows.
My graphics card is an XFX ATI radeon 5770.
What is causing this issue?