Windows 7, Windows 8, Windows 8.1 and Windows 10 are perfectly smooth in UI transitions and there was zero delay in opening apps. The whole operating systems were faster than their previous versions with optimizations and kernel trimming.There are exceptions, but even those are inconsistent. But then look at what Vista was like, while XP and 2000 were good before it, and yet ME was horrific prior to that. Similar to Windows 8 not being great, while for the most part Windows 10 is quite good for most.
In any case, whether it's this or that, proving it one way or another doesn't change or affect anything related to it. It's just talk, and in this case the same repeated talk that has been repeated many times over at least the past few years.
Understand this: People disliked Windows 8, 8.1 because of poor UI design and not due to performance issue.
This thread is regarding performance issues which started right from iOS 8. Don't confuse 2 different things.
I would say that even Windows Vista had good performance, but due to implementation of DWM and new sound stack, hardware manufacturers were just starting to learn how to write proper drivers. That was the reason for performance loss. But by Windows 7, everything was up and running smoothly.
iOS is going in opposite direction. So please don't bring that "uhh Windows is getting slower" argument again
The main culprit for all this stutter and lag is the damn Blur/transparency/translucency (whatever you call it)
It is simply ruining our iOS experience by taxing our hardware at the cost of looking fancy. But if we disable it, the UI looks worse than Android 2.0