It’s happened to you, probably many times over the years: you’re using Safari, and it starts to feel like molasses. You’re working among several apps, and you start to have to wait for seconds or longer as you switch between them, adding frustration. Or you touch your laptop, and say, “Yowch!”–it’s much hotter than expected. What’s going on? The complex interplay of Mac hardware, macOS software, third-party background utilities and add-ons, and foreground apps can result in unexpected outcomes,
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