I'm used to work with 3 screens on my R9 280x:
1x 27" at HDMI 1920x1080 at 60Hz
2x 22" at DVI-D 1680x1050 at 60Hz
Driver Version 14.12 didN#t fail to run this config without any problems.
Since Version 15 both 22" are unclear (like vga unsharp) and it's resolution can't be changed anymore.
I'm running Deskscapes. In Version 14 I could run it on every screen. Since Version 15 it won't work on the 22" any more.
Great work AMD. *** is that?