Rain and snow textures are replaced with transparent .dds files. You will still see the animation icons (water splashes), but the particle effects are gone, preventing micro-stutters.
While performance improves, the visual downgrade is severe: fifa 15 low graphics mod
Functional limitations:
The FIFA 15 Low Graphics Mod is a community-created modification designed to reduce the graphical fidelity of the game below the official minimum settings. Its primary goal is to enable playable frame rates (30+ FPS) on integrated GPUs, low-end laptops, and older desktop systems that do not meet the game’s original hardware requirements. The mod achieves this by editing configuration files, disabling shaders, reducing texture resolutions, and removing post-processing effects. While effective, the mod comes with trade-offs in visual quality and online functionality. Rain and snow textures are replaced with transparent