You know how sometimes you have a toy that you really like to play with and you don't want to share it with anyone else? That's kind of like what processor affinity is.
The toy here represents the central processing unit (CPU) of your computer. Your computer has many of these toys or CPUs to do different things like running programs, opening websites, or even playing games.
Now, sometimes these CPUs get confused and don't know which program to play with first. This can slow down your computer and make it not work as well as it should.
That's where processor affinity comes in. It helps your computer organize its toys or CPUs by telling them which program to play with first, just like how you can choose which friend to play with your toy first.
This can speed up your computer and make it work more efficiently since each program has its own CPU to play with, and they don't have to wait their turn to play with the toy.
So, processor affinity basically just helps your computer run faster and get things done more quickly by making sure each program has its own "toy" or CPU to play with.