I'm assuming at 1080P? You should still be able to enjoy the game with your rig, just with some settings turned down. Some of us old Redemption players even experienced that in 2000 lol. When I upgraded to a 256mb gpu, that game looked sick!
Some features like ray tracing might need a gpu upgrade, if it actually turns out to be a good implementation. No guarantee it would even be worth a pricey upgrade until you see it and feel you HAVE to have it. You could pop a new 3600x in your current mobo with a bios upgrade and you'd see a decent performance jump, if you're not happy with the game at launch. I wouldn't normally recommend buying a used cpu, but Ryzen chips don't run hot and require low power, so degradation shouldn't be as much of an issue. If you find a good deal on a used 3700x in several months down the road from a good seller, and you know no pins are bent, it would be even better. Your rig isn't really that far off from being pretty solid for a while imo.
I'm using:
Ryzen 3700x @4.2ghz on all cores
Asrock x370 Taichi mobo
240mm clc
32gb ram
2tb Intel m.2 ssd
RTX 2080ti
Acer Predator x34 1440p 120hz monitor