[Porksmuggler]

I do a lot of benchmarking, and the reason I ask is that this affinity is counter logical to thread management of the operating system. For instance, on a new i5 or i7 series CPU, the turbo mode kicks into higher multipliers for single threaded applications. The scheduler in Windows 7 or Vista will move the single thread around to balance load and temp on the 4 cores, all the while the CPU maintains the higher CPU clock. This processor affinity would interfere with this process. This all can be tested very simply with cpu-z and prime95 running a single thread. I understand your logic for moving the IL-2 thread off a core that the operating system is using for other apps, but this is not how current Intel CPUs with Windows 7 or Vista work in practice.