Very small percentages of CPU cores and GPU RAM is used effectively. Suggest NVIDIA drivers or engine optimizations/streamlined coding system.
30 FPS seems to be the norm for most players on high-end to low-end rigs, especially in multiplayer matches.
ArmA 3 is not seeing it's full visual potential because of performance issues. It's slightly game-breaking at times, and I really hope it can be fixed in the future for everyone's benefit.