The Story In the KSP 64-bit thread, where Lilleman showed us how to use KSP with 64-bit, gpisic noticed that when forcing the game into using OpenGL instead of the standart Direct3D as rendering system, KSP uses significantly less memory.For example, I use 70 mods, resulting in a 2GiB GameData folder, and normal 32-bit, and get the following memory usages: Direct3D: Crashes while loading at about 3,223,600K ≈ 3.07GiB OpenGL: 2,266,200K ≈ 2.16 GiB Difference: 0.91GiB You see: By swit