I don't know what kind of budget you have in mind but something like the new 3060 or 3070 would be a good upgrade.
I personally use 3090 but I don't just use my PC for gaming.

Quote Originally Posted by MPK View Post
The game doesn't even take much advantage of the GPU. Trust me I got a 3080.

A 1060 is more than enough for this game. Your CPU is kind of a bottleneck for this game though but should be more than enough to play this old game.
Play above 1080p and GPU plays a bigger role.