I'm trying to use my monitor and HUION KAMVAS PRO 12 graphics tablet in a dual display configuration. My graphics card is a Sapphire R9 270 which has a HDMI, DisplayPort, and 2 DVI ports, one white and one black. My monitor supports HDMI and VGA connections. Using a DisplayPort to HDMI active converter, I attempted to get some sort of signal from both devices however my monitor was in a strange letterboxed aspect ratio with a low resolution which I couldn't change and my graphics tablet was locked at 1366x768 despite having a native resolution of 1920x1080. I'd like some advice/help setting up the configuration how I'd like to, ideally both working in 1920x1080 individually and extended. Software issue? Hardware/connection issue?