I play at 1440p and I have a 5800X3D and an RTX 3090 in the (Windows) machine I play Hunt on.

Previously, I had an RTX 2080 and an AMD 3950X.

I initially upgraded to an RTX 3090 believing this would give me the best improvement to my frame rate (I was stuck at around 72 FPS to get a stable frame rate, though I generally was fine with 90 though I’d get more noticable lag spikes).

The 3090 (per my recollection) brought me up to being able to do 120 FPS on the 2080, but I’d still lag spikes that would send my frame rate down into the 70s.

I later upgraded to a 5800X3D, and after doing that, I have an (almost) flawless 120FPS. There are definitely some hard lag spikes still when the game loads new chunks; I made that a bit better upgrading to a NVME drive. However, it still didn’t get rid of these lag spikes entirely.

I’d say the 5800X3D would be the thing to upgrade in your setup based on my experience (ultimately, – and speculatively – I think the 3950X was more of the issue than the 2080 for Hunt). I wouldn’t expect perfect frames when loading into new areas though (particularly if you’re looking for 120-144hz 1440p or 4k). I’m hoping the game engine updates this fall improve the game’s performance in general (particularly with issues like map loading frame drops and map loading times).

EDIT: I’ll also add that my friend is running Hunt on Linux with a 2800X and my old 2080. I believe he’s running at a fairly stable 144hz 70-90FPS and 1440p, but I might be mistaken.