Open Rails uses video memory to render scenes. On the other hand Posted on August 5, 2021May 6, 2022 By Muhammad No Comments on Open Rails uses video memory to render scenes. On the other hand MSTS uses your System RAM to load and manipulate all the textures. MSTS just passes the frame to the video card for rendering – much less stress on your video card. See also How To Pronounce Dhruv? how tos