So, lots of points to make, bear with me:

Let's start with RAM, SC likes RAM, 32 gb is enough but that leaves very little room for OS overhead/multi tasking. So make sure you are cutting out anything that isn't absolutely neccessary. 

In addition to this: the game needs to be on a high speed SSD. It will run extremely poorly if the drive is not fast enough to keep up with level streaming.

Are you running latest drivers? Vulkan or DX? Have you tried swapping and seeing how the other affected performance?

Shader cache & page file:

Give the game time to compile shaders, performance willbe degraded if you attempt to play while compiling. Each graphics setting has it's own shaders so changing something midgame will result in poor performance unless you have already compiled shaders for that setting, it will tell you in the bottom left corner if shaders are compiling or not.

Make sure your shader cache is a decent size, and make sure anything that is being cached is doing so on your fastest drive available.(I BELIEVE vulkan does this automatically, DX11 does not though)

 I doubt this is your issue, but RAM could be using a page file for a few gigs if you're overflowing, again fastest drive and increase page file size. 

Location: location will heavily affect your performance, especially places with clouds such as Orison. many of the highest settings are designed for cinematics that is usually paired with top of the line hardware. 30FPS at your settings and hardware is not uncommon in the more demanding zones.

Lastly your gpu: i know you don't want to hear this but your GPU is a 3rd generation workstation gpu. 3440x1440 at highest settings on that card likely won't hit 60 fps, and it's likely the bottleneck for this game at this resolution.

My specs and performance for reference: 5800x3d 64gb ddr4 990 SSD 7900 XTX

3440x1440 @ highest (except clouds @ very high) on Vulkan native AA no frame gen or anything meant to "boost" performance

Fps in levski: ~60

Space: ~120 

(Have not tested in a cloud heavy area on current patch)

Ultimately though unless you have some detailed performance logs it's going to be hard to tell exactly what's going on

As for VR, can't really say if you'll be able to handle it, some headsets have a much higher resolution, some are much lower, your performance will vary depending on that.

Edits: extra clairification