I just upgraded my computer from a 970 to a 1070 i have dual monitors. i used ddu to remove old drivers. before i installed the new drivers my main monitor which uses display port was working and as soon as the drivers finished installing it stopped getting signal. when restart my computer it will get signal and show the boot logos but as soon as its loaded i will lose signal again. my main monitor is working with hdmi. so it seems like the drivers messed with my display port connection. also it seem like my performance in games has decreased.