I turned off one background service and my Linux machine finally felt fast

I've got an older HP Pavilion laptop that runs ZorinOS, but it always feels a little sluggish after boot. The desktop appears fast enough, but it takes a while to feel less poky in the first minute or two after login. Like there's a bunch of stuff going on in the background making launching apps feel slower than it should. I figured it was just the hardware showing its age, but after some research, I found some terminal commands that helped me diagnose and then even fix some of the issues.