How come MSI Afterburner only showed 70% usage when I turned on 8192 shadows? Turning it down to 4096 drops the usage to 30-40%. This was the only thing affecting my GPU usage. Even the environmental slider changed practically nothing. If AH could starve any GPU, what settings does it? Antialiasing aside and at 1920x1080 resolution.
As for AH demanding more CPU than other games...running BF3 even on low pushes my CPU (Q9550) to near 80-85C (I don't play it long so I don't worry about it). Running AH, temps are around 60-70.
How the hardware is apportioned to handle the requested resources is not in control of the game, or any application. It is in control of the driver. The resource load is portioned out, into system RAM, as the driver see fits.
The tool you are using is never going to be able to tell what the actual resources a game is asking for. Only the game developer will have access to the real demand the application is asking for.
According to your information, computers with Intel video chips should run the game no different than an ATI 7990 as long as you have a fast enough CPU. Good luck with that.
In a perfect computer system, all the hardware would be under equal loads with no one piece of hardware waiting on the other piece. Does Aces High benefit from a fast CPU? Absolutely. Does it benefit from a high end video card? Absolutely. The trick is to marry the two items in a way where both are running as fast as they can, all the time.
If your video card is the bottleneck, the CPU will not be under as high a load as it could be. If the CPU is a bottleneck, the video card will not be under as high of a load as it could be. If the video card is forced to use the CPU for resources, then everything gets out of balance, quickly and the system will basically stumble around with nothing running at its highest potential.