This mod removes most of the effects of the game in order to increase FPS and thus achieve an improvement in performance especially for low-end PC.
Extract all files from this archive to your JC2 root folder.
* Effects that remove they are:
-Clouds
-Fire
-Rain and Snow
-Effects Shooting
-Water Effects
-Smoke
-Blood
-Bullet
-Trees
-Grass
-Textures reduced to 50%
Source: Videogamemods.com