Hi there. I have noticed that when I delete all cache and temporal files on my computer, next boot session lasts pretty much less. And after 3 days the same story again. Because of that I used to clean and delete all temporal and cache files once per week. And yes, my computer is running nice and smooth. But it is somehow heavily to do and very bored procedure ….
Oh, I can see that you have found the way to ease your self when the word is about paying some maintenance guy to operate over your machine. You can do that manually like your practice is or you can find some cool programs over the internet that are able to do everything instead you. Without any mistake. Go to the Major Geeks for example. See what you can find there.