Hello Grant,
I would like to use Tobii EyeX to work across the entire resolution of 7680×1440. NVidia surround allows all three monitors to work as one. So windows sees them as one monitor with the above resolution.
So yes to your 2nd question (“Or for one eye tracker to work over that very wide angle?”)
I can sometimes configure Tobii EyeX before I configure NVidia Surround, but then it only tracks my eye movement just slightly farther than the center monitor. All three of these monitors are 27″ and in landscape.
Thank you,
-Ken