I've got an i9-9900K CPU and an RTX 2080 which should be powerful enough, I've been tinkering with settings and it looks like V-Sync might be the culprit, I was experiencing stuttering running the game on 1920x1080 resolution and it stopped happening when I disabled V-Sync and enabled DLSS in performance mode. I can run the game in 4K now without issues, tested with the latest patch and DirectX 11 (not Vulkan).