Who wants to learn how VRAM works today? See, Path of Exile is making some changes to how it utilizes VRAM in terms of resource management, and it wants to make absolutely sure that everyone reading about the update understands precisely what that means. So there’s a whole lot of discussion about how VRAM works, how the different rendering APIs utilize it differently, and how the game has heretofore had a rather conservative setup that tries to minimize use of VRAM to ensure the best possible performance without slowdown or crashing.
Of course, the “heretofore” in that prior sentence implies that this is changing, and that is indeed the case for the future of the game. It’s set to change to a more aggressive use of available VRAM resulting in less texture pop-in and smoother performance, especially for players with mid-range or better GPUs to take advantage of this. You can read the more detailed explanation on the official site; just look forward to it in the very near future, possibly even next week.Source: Official Site