I'm just going to say it. You're not the only user of your computer anymore. If you run agents all day, they're probably using it more than you are. Now, I know what you're thinking. My Mac's getting old, I need a bigger one. You might also be watching because you're pricing a Mac mini or a Mac Studio, or maybe there's an Nvidia machine you're comparing. Here's the problem. A faster chip and more memory will not stop the agent load that you're driving from growing and growing and growing. Your agents open browsers, they start service, they write files, they leave a lot of it behind on the machine when the job is done.
You might also be watching because you're pricing a Mac mini or a Mac Studio, or maybe there's an Nvidia machine you're comparing.