Well I have a dual quadcore with 32GB of Ram and a Titan card and I cannot run it smoothly at full res, was the same in A18. It's not s huge deal, I just knock the overall screen res down a notch, most settings I have are a split between mid and high, and it still looks great, and is smooth. But I put it back to 3440 and my framerate plummets. Not sure why, I run other modern games at 3440 without issue, like R6 Seige(though I do not run it at 4k, my son does on his). I may have a Titan card, but it is the very first one made, my sons 1080 Ti has more vRAM. But on his machine he runs stuff no prob, then he goes to play Minecraft, and laaag.. memory problems. It may have something to do with memory management in a voxel engine, not an easy task. Anyway he has maybe half the system RAM I do, but those 2 extra GB in his video card make all the difference in some games.
My guess is I need more vRAM, so a better video card, it is def not my system RAM, I have never, ever, seen that 32 GB peak or fill up no matter what I do, and I work on larger CAD assemblies that typically take "workstation" level machines where Titan is the potato entry card. In that realm vRAM is everything, more so than system RAM, and it only really lags when you get a high volume of geometry in a single file. I have to manage huge CAD files(robot assemblies) by removing erroneous details(some CAD files have a TON of this), and manually creating lower detail models like the LOD stuff they do in game engines.
Anyway, my point is it seems like voxel engines in general run into similar memory needs as workstation level CAD. Major kudos to TFP for even trying what they do, because they have to improve performance via extreme optimization, where-as in the CAD world they expect users to tackle it via Brute Force and just throw more video RAM at it. Problem there is the current "entry level" is the new Titan at around $2,500, then the "normal" cards used are the Quadro cards that I think start somewhere just over $5k. So, yeah... upgrade your video card. Should be able to find a decent 1080, better with something like a 2080, but in a few months the new series drops, so the 3080 and a whole new suite of stuff should be out this Fall sometime. Current prices will drop on some, not as much as you'd think on others, regardless this realm of hardware is about to go through another huge growth spurt by the end of this year. Time it right and look around enough and you should be able upgrade more affordably, soon, ish.
