Dual Monitor with H170N + HD530 integrated graphics

Hello! I can't get my El Capitan build to work with dual monitors (one with DVI, the other with HDMI or both with HDMI).

I can boot and see the boot menu with both monitors but when OS X starts, one screen goes black and the other has fuzzy graphics and I am able to see only the top bar.

"Hotplugging" doesnt seem to work.

Note: Dual monitor in all port configurations work perfectly (1080p @ 60Hz) in Windows 10.

Any Suggestions ?

My build:
OS X: El Capitan
Mobo: Gigabyte H170N - Wifi...

Dual Monitor with H170N + HD530 integrated graphics