Does reinstalling an OS (Windows, Mac, iOS) makes the computer faster ? Should we factory reset our devices every year ?
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In general it’s not that reinstalling the OS is what caused the speedup. It’s that uninstalling all the other nonsense is what caused the speedup. Reinstalling the OS is just the most certain way to ensure you’ve uninstalled everything else and haven’t missed a spot, as it forces you to start from scratch.
Especially if one of the other bits of “nonsense” that’s causing a slowdown is a piece of malware that doesn’t *want* to let you uninstall it. A full re-install from scratch is one way to circumvent any trickery it’s trying to do to prevent itself from being removed.
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