At least someone who has good eyes, instead of others just repeating the article's conclusion, which is clearly false if you take a look at the CPU decreases on the iPhone 7 especially, where there is actually no reason for, since the A10 is still extremely powerful and it's also been under-utilized since introduction.Proof looks pretty irrefutable to me. The CPU performance bars got lower and lower as time goes by. I'd says Apple definitely is slowing down devices, and this shows it. Thanks for proving my theory.
If not deliberately, Futuremark's results show there is a serious bug in iOS 11, which could have something to do with the 1st generation performance controller that spreads the CPU load to all cores, where iOS 11 however, has been optimized for iPhone 8 and iPhone X's 2nd generation performance controller (all CPU related) or there is some other bug that just needs to be fixed urgently.
From the GPU side the "old" GPU in iPhone 7 is still using IMGTec's GPU IP and since iOS 11 apparently brings newer GPU drivers, there will be a slight increase when the GPU is utilized fully (benchmarks).
One has to always remember that the GPU or CPU on iOS is never 100% utilized when doing only basic things within iOS, which is why the Macrumor's comment and conclusion presented in this news is pretty far from the truth, even if they are only quoting Futuremark, which just presented contradicting data by themselves.
Feature wise very old devices can only still be fast or "as fast" when Apple is willing to invest time optimizing things and naturally, they want to have iOS 11 out running good on their newest devices first, but that's a priorities decision that of course will not be a very welcome one by the masses of people owning older devices.
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