This game relies on a strong CPU. It scales with cores, up to 8, and always gets slightly better FPS with 8. The stutters in this game can only be lessened through CPU power. The best CPUs are the Ryzen 3Ds, and this game benefits from them a lot. I think the stuttering is improved by 30% or so just by the 3D cache.

In terms of graphics card, Nvidia is slightly favoured due to DLSS, which takes away the rough edges (jagged lines). For 60 FPS at 1080p medium/high, an RTX 3070 or RX 6700 XT equivalent is good.

For ram, you need 16 GB.
SSD is mandatory for storing the game.

Resolution:
For a moderate FPS increase, running the game at 1600x900 is a neat trick, at the cost of adding blur.
Nvidia RTX cards should use DLSS. I add the latest version to the game with an app called "DLSS swapper". The frame gen is buggy for me.

Graphics settings.
I set everything to medium first, but then set 'draw distance' and 'vegetation quality' to ultra. The object pop-in is the most distracting part, which is why I do this. Also, textures can be set to high if you have an 8 GB GPU.
Post FX, I set it to medium, but turn 'reflections' and 'motion blur' off. Reflections apparently look better off, but you can test it for yourself.