I think it's important to distinguish performance and reloads, you can have more reloads and performance being exactly the same. iPadOS barely affected the performance of any iPad pro other than the 9.7, where 2GB RAM is so little that the OS has to constantly compress and decompress stuff, making the system stutter. But this happens only with dual core devices and 2GB of RAM. Even the dual core 12.9in pro with 4GB RAM was much better.
And even something as "low" as A12 (which is technically quad core, but more similar to dual core with hyperthreading since 2 of the cores are efficiency cores) and 3GB of RAM is perfectly smooth with iPadOS 15, just as it was with IOS 12...
Will the RAM usage increase in future iPadOS versions get it to stutter as some point? I don't know, but I'll leave the mini 5 on 15 where it's perfectly smooth.
iPad pro 2nd gen has a 3-core processors (A10X, contrary to A12 the efficiency core cannot work at the same time as the power core, so it's really a 3-core CPU, not a 6 core one) and 4GB and it's stilly very fast on iPadOS 16 beta, to the point where I don't see the point in restoring 15 before iPadO16 is availabe. A10X has never been as buttery smooth as A12 or A12X, but it's much better than A9X has ever been on any OS version.
Concerning battery life, I think your assumptions that the more you upgrade the worse it gets are wrong, but you seem very convinced of it, so I won't be trying to convince you otherwise 😉
My experience is that, past IOS 10 and its great stand-by time, there is not much difference in battery life between 12, 13, 14, 15 and 16. Sometimes battery lifes slighty improves with updates, sometimes it gets slightly worse, but the difference is very minor to the point that I don't care. Instead I care about getting more functionality with updates, as long as performance is not impacted. With A12 and even more so with A12X there is zero impact on performance, they are buttery smooth and I don't expect that to change with iPadOS 16, at least for the 8-core A12X, which has plently of room. Things have radically change with iPads compared to the past. Today's chips have much more headroom to take updates with no impact on performance compared to the past.
Will reloads increase? Maybe, but it doesn't matter at this point. 4GB alrady reloads enough that it's not a device where I would leave a tab with a video open at some point and expect to continue to watch a couple of days later, as I could with M1. Or leave a form only partially filled. For anything else reloads don't matter and make no difference to me. Allow me a comparison, it's as if someone cheats on you, but not very often and someone else does more often... Does it matter? No, either you trust someone or you don't... I don't even trust M1...(we'll see if I change my mind with memory swap). I have actually almost stopped using iPads for youtube or anything where I could lose data, I use my 12in Macbooks (I have 2) for that, can leave as many video open as I want, they'll always be there where I left them... I harly ever turn them off. And they are so light it's just like holding a 12.9in iPad....
Yeah, agreed regarding the distinction. I don’t pay much attention to reloads, so while they might happen more frequently on iOS 12, I haven’t really noticed. I am not saying they aren’t there, though. It’s just that I don’t really know with certainty whether they are.
Regarding battery life, firstly I’d like to say that I don’t mean to discount your experience. Also, this conversation isn’t included on the following paragraph, because you haven’t said that.
That said, I’ve discussed this with many people who staunchly defend iOS updates, and the pattern is always the same. “You are fear-mongering, battery life is just fine on my 9.7-inch iPad Pro on iPadOS 15 (or my 10.5-inch, or my iPad 5, a similar-aged model). The fact that it has worsened for you is something I cannot explain, but mine is fine, and iOS updates - they state this far more forcefully and categorically than you have, almost dismissing my statements - do not, under any circumstances, decrease battery life”.
I’m like, “okay, fine, I believe you, even if I seriously think it does, and I will not dismiss what you’re saying. May you please share a screenshot of your battery life?”. They do and... 5 hours of screen-on time. 6 hours. With 88% of the usage being Safari and the rest being some light reading. Then I say “6 hours? You think that’s good? I got 14 back on iOS 9, I’m getting 10-11 on iOS 12. 6 is awful”. Inevitably, excuses ensue: “But it’s old, but battery health, but different usage”. I track battery life very closely. 13 hours aren’t 11 (with some luck, the vast majority of the cycles it’s below that).
You said that “the difference is very minor, to the point where I don’t care”, and depending on your definition of minor, I agree! I reckon some people would be very happy with 10 hours I am getting. Can you consider a 14 to 11-hour drop minor? Yes! It’s enough for a full day of light use, then it’s fine for some people, hell, maybe they wouldn’t even notice. And it’s fine! Just like I don’t notice any difference regarding reloads, but notice the difference. What did I say in my first paragraph? “I don’t track them closely, so they might be there and I’m not noticing”, and - I’m adding this now - the fact that I’ve read several people mention iPadOS 13 as the cutoff for a lot of reloads, whilst noting that it worsened even earlier leads me to believe that while I haven’t noticed them, they are there, and I just don’t pay enough attention.
Completely, absolutely agree on “today’s chips have improved enough so that performance differences aren’t noticeable”. The A6X on iOS 9/10 (three versions in) is horrible, whilst my 9.7-inch iPad Pro on iOS 12 (also three versions in) is nearly flawless. Not to mention the iPad Mini 1... the A5 on iOS 9 is unusable. This is not the case currently, and it will be better as chips get better. I’m inclined to believe that the M1’s performance on iPadOS 17 (three versions in) will be even more flawless than my A9X-powered 9.7-inch iPad Pro on iOS 12 is. Battery life? Remains to be seen, though I am not confident, considering they shredded the iPhone Xʀ’s A12 Bionic by iOS 15. Like you said, performance is fine, totally smooth. Regarding reloads, I thought maybe 4GB might fix it, but they don’t, so I’m more of the “wait and see” opinion now. It’s difficult to predict.
A key difference in our view is “I’m willing to forgo battery life as long as performance isn’t impacted to get new features”. I’m filling to forgo any and every feature to preserve flawless battery life and performance, perhaps due to the fact that I don’t upgrade often - I only have two iPads, you have a lot more
🙂
In fact, on the supposedly top-notch M1, I don’t even trust iPadOS 16 (let alone 17 or 18), so I’m staying on my iPad Air 5’s original version (iPadOS 15).
As a final observation, I’d like to say that one of the most important aspects is that performance is a lot better than it used to be. That is something to commend.