I am cynical when it comes to these tech giants, and believe that both Microsoft and Apple deliberately introduce such bugs that slow down your computer / mobil

I am cynical when it comes to these tech giants, and believe that both Microsoft and Apple deliberately introduce such bugs that slow down your computer / mobile device or give you irritating trouble in the hopes that you start thinking it is a hardware problem and believe that it is time to buy a new computer. (And OP did just that - s/he bought a new Macbook Air because of these bugs).