This is just more evidence that CDPR did a poor job porting the game. Come on? Not optimizing for a 4 core processor. Just lazy. It doesn't take a rocket scientist to figure out the majority of systems are 4 cores these days. The consoles are just a glorified laptop and they run 20-30 fps.
And what about the lack of VRAM consumption? Is that normal? I don't think so. There's VRAM there, use it, damn it. I don't have crappy laptop hardware, I got a real machine.
Now, take a look at GTA V. Compare how that game runs on a x1/ps4 vs a lower-mid-range-PC.
PS4/X1 runs GTA V at 30fps with reported framerate stuttering/frame drops
Let's take my rig. i5-3570k @ 4.5 8g ram gtx 670 - runs at constant 60fps at high settings, no stutters, no drops, perfect. The game uses my machine, it uses my vram, it's a great port.
My rig runs Witcher 3 @ 30fps with high settings and a mix of post-processing. It could go a little higher sometimes, but I keep it locked at 30 because it just looks awful otherwise. Camera stutter is still present at 30fps for me.
This game is not optimized. It's been the opinion of many reputable gaming publications that it's not optimized