Board Thread:Bug Reports/@comment-30189017-20161206121022/@comment-27219153-20161207061506

SkyrimWTF wrote: I have never had a problem running this mod on 2GB before. You are aware that in MultiMC you were only using 1GB right?

Any area with increased terrain height will take more RAM to load. Just as minecraft has chunks dividing to terrain into 16x16 areas, it also has vertical sections which further divide a chunk to form a 16x16x16 volume. A section is only loaded if itself or a section above it (has a greater y-coordinate) contains any data. In a biome that resembles plains, you will likely only have 5 sections in each chunk (up to y=80). However in a mountainous region, you can have up to 16 sections (up to y=256) although usually it will be in the range of 7-10 sections. Even still that is quite a bit more than your normal plains terrain.

Anyway, I'm glad you got it working!