Found another few small glitches.
1) Using Nvidia surround resolution
Peripheral (side) screens do not correctly display some special effects.
Example: water-flow off structures shown on central screen only.
2) Lens flare effects, and other light coronas are scaled (very large)
3) Rarely the Hud/Visor iconography would be scaled (very large)
I suspect issue 2 and 3 are a driver issue.
Problem 1 has been an issue since Crysis 2, any fix please?