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Can confirm this works extremely well. Even un-installed NoSlowAnimations. I don't need it any more.
 
Big issue is that the 6+/6s+ use downsampling. this is not good. Why Apple not use native resolution

It does boggle the mind.

1080p is a good marketing resolution. But still, why not go further since it renders further?

Especially if down sampling is where it takes a hit
 
I tried it. I can't rule out placebo effect just yet, but it does seem to make things a bit faster and smoother. Icons appear much faster when using spotlight, for example.
I haven't seen any negative consequences.

(6+, 8.4)
 
I'd still think more compute offsets less resolution being pumped out since it already does that and then down samples.

So far 6s+ battery is fine
 
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