Mobile Requirements

this is not accurate at all considering that each chip are not made equal. A Samsung Exynos 9611 would be way more powerful than a Qualcomm Snapdragon 801 released in 2014. Yet both of those chipset would not even reach the same performance level of a Samsung Exynos 2100 or Snapdragon 888
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usually, a good layman's way to understand how powerful a phone's chipset is by looking at the price (applicable to androids only as ALL new iPhones and iPads except for a few iPad series regardless of the price point would have the same chipset released alongside the latest generation) which means that a Samsung Galaxy A51 ($200~) would be way less powerful than a Samsung Galaxy S21 ($800-1000)
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another way to understand the performance level would be by benchmarking using apps like antutu benchmark or geekbench 4. the higher the score, the better.
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it's also better to understand the naming scheme of chipsets albeit research must be done to avoid confusion. For the Snapdragon, the Apple A and M series chips, the higher the number usually means better (Snapdragon 801 vs 888) or (Apple A6x vs A14 Bionic) while for Samsung's Exynos series, it's usually a bit more convoluted.

iPadOS: Max everything doesn’t cause any lag. You are able to download anything without it crashing, but may crash in flight with super high part builds (5000+). My iPad is Generation 7, by the way.