When choosing what the two "Full Screen" monitors are pointing to, it only limits the choices to 1-4. I have 7 monitors on this system. In my case, the choices should be 1-7. Why limit it to four?

This is on a 2 GPU system, but I believe it has nothing to do with multiple gpus...

According the manual, the mapping of monitors 1-4 is based on the location of the monitors on your windows desktop (left to right, top to bottom), not on which card they are on.

In my system, monitors 1 + 3 are on GPU #1 and 2+4 are on GPU #2.

You are already enumerating the monitors to determine which monitors are "left to right, and top to bottom", so why not just let me choose from all 7, why only four? This shouldn't increase processing time, because you still have the "Two" full screen limitation.