I would honestly upgrade the CPU and GPU, but that would cause you to get a whole new Motherboard and RAM. Right now I would go with the CPU, if you are willing to put down an extra 50-100 dollars. The Ryzen 5 3600 is a sweet spot and you can get a decent b450 motherboard for 90-110 dollars. Ryzen does love fast ram however, so I would get a 3200 kit at the minimum. I may sound like Linus saying this, but got to Micro Center (if you are in the US). They have alot of sweet deals and if you keep an eye out you can even get a decent bundle deal for both the cpu and mobo.