Hi. I recently bought a GTX 770 card for my Mac Pro (from MacVidCards) and it works like a charm - kinda. Often when my Mac boots, my main display (which is right now a 27" Eizo screen), will boot in "Optimized for SAMSUNG" resolution (I have a Samsung TV connected via HDMI, but it is often not on when I boot), and also it will boot in "mirroring" mode. I have to change it to "optimized for Eizo xxxx" and turn off mirroring, and all works well. Anyone who can think of a solution to this? It is of course workable but pretty annoying that I have to do these "tweaks" on almost every boot. EDIT: A little more info: Eizo is connected via Displayport, 2nd Dell monitor via DVI, Samsung TV via HDMI.