I've used rivatuner to see why would my game stutter, I had this problem since very long ago (lag example https://youtu.be/a-HVRnohipI). It's been really frustrating as for the past four years I've been constantly keeping up to date with the development progress, constantly kept upgrading my rig and hoped for the best.

But back to the point, rivatuner has not showed any anomalous behaviours other than the RAM usage. I currently own 2x4GB of 2300Mhz DDR4 RAM, the ingame RAM usage seemed to go above my ram stick's capacities, e.g. Even though each of the sticks is only 4GB, DIMM2 last session has gone to around 7Gb usage and DIMM4 to about 14GB (I figure it uses windows page file from the point it reaches terminal capacity of each ram stick onwards).
The RAM gets flushed everytime I restart the game, but it's problematic when the only server I play on is full and I need to queue up with so many people just because of the lag. I know that the minimum required RAM for now is 12GB, although before I've used to own 16GB of just a tad slower DDR3 and the issue still persisted, I have not analysed it at that time but my bet is it was the same reason, the game would go above the threshold, this kept happening since I've started playing which was version 0.52.

It would be really nice if possible to implement a mechanic where RAM only stores data from the objects in the vincinity of the player e.g. if I can see a radius of 1.2Km and go away from that place, the data should be released and not kept, giving space for more objects to be loaded, which would maybe fix the stuttering issues me, some of my friends and other people we met in-game have been experiencing.
I have no idea if the issue is our computers or the game, but from what I've seen to play smoothly I would need a lot of RAM, disable the page file and hope for the best for which I don't have funds at the moment, and even then I would be sceptical as to would it work. Either way hope I could point out some possible problems and help with the development. Maybe I could help some of the folks with similar issues out there.