Maybe (and this is a HUMONGOUS maybe) if you’re running an Nvidia GPU, their PhysX code may be running on the GPU instead of the CPU???
I know that’s a huge stretch, but it’s the only logical connection that I can think of. And even then, I’m not really sure what PhysX is used for, if anything, in the SIM.
I’ve always thought about flight model, ground physics, etc. so I’m thinking this is a real shot in the dark.
Just a thought…