MacBook cpu upgrade…or something different?

I have been recently playing a game on my MacBook Pro (house flipper) with my Xbox one controller, but this past week it’s been unplayable. The movement is like a drunk person walking into a wall the fps are 20-30 when I’m moving and 40-50 when standing, and I’m unable to open my UI. I am able to play the game just fine with the keyboard, and the controller works on the Xbox. I talked to the creators an they suggested upgrading my cpu. I apple able to upgrade my cpu, or is there anything else I can do?