I checked settings on projector and it was 16 :3. Settings in my CPU display are at 1280x800. It works perfectly on the option 1 full screen setting I just need to get the same throw in the advanced output setting.

Im currently trying to hookup my Mac Pro to a projector using HDMI and Arena 4. Im building a DJ booth out of boxes and doing simple projections. When I'm in the software and go into advanced (output) it is not using the whole entire height and width of the projector. If I got to option 1 full scree...