I can figure out why this mod is naturally heavy and resource consuming but, i've seen that it doesn't force Minecraft to use more PC resources.

I got my framerate set on 70fps (stable) and when it starts raining it starts to flicker between 50fps and 40fps.

The weird thing it's that my GPU stays at 50% and my CPU at 20%.

So far, reducing rain density has helped to get better performance.

Weird, looks like it somehow makes my FPS unstable, so i just capped my fps at 90fps and now i'm getting 70fps. (Tested with default particle settings)

Which, works for now, but it's not ideal.

duplicate of #17