If you want to get the best performance you can, I would recommend getting a laptop cooling pad. When a computer had to do a lot of work it generates heat, in order to protect it self from overheating your computer will purposely slow it's self down. Getting a laptop cooling pad will help with heat generation and is the cheapest and easily thing you can do to get a performance boost from your laptop.

Cheapest decent looking one on Amazon: https://www.amazon.com/dp/B01KZALHGK/

Highest rated one on Amazon: https://www.amazon.com/dp/B01M715BCV/

The one I used to have (I liked it, it was good): https://www.amazon.com/dp/B002NU5O9C/