I'm not sure I buy that argument TBH. My CPU doesn't even come close to breaking a sweat running CoD - maybe 30% activity on the most active core.

I suppose you would have to do a side by side comparison. See the hit each make against your system, it was only a logical guess that a sim that calculates different flight systems would be a greater system hog than one that doesnt calculate hardly any. Of course you have to take into account active world objects and such... but then I am just guessing, nothing really based in any fact.

I agree of course. Just not sure it is the limiting factor.