Guys please read my previous post again, as you seem to be reading into it more than it states. I didn't say "sit tight and do nothing devs, these guys were asking for it for buying dual GPUs", far from it. That's a totally different interpretation and it's not mine.
So, to recap, i'm not saying CoD is beyond optimizing or that everything is perfect, i'm just saying it has been said for ages that dual-GPU setups have an inherent hardware disadvantage by design that causes stutters in some games and now someone took the time to measure it accurately, confirm it via AMD/nVidia representatives and present it for the rest of us. Actually, if the article is accurate then it causes stutters in most games, but the "gap" is not always perceptible by the human eye and so it doesn't bother us most of the time.
In that sense yes, seriously, there's a hardware design issue in dual GPU setups overall (and in some single GPU setups too), which shows even more in CoD due to certain engine restrictions and bugs.
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