Disable the shooting assistance (tracers) that shows bullets and cannons balls, which makes more realistic!
Installation
You should install in your Total War folder below (by default) or elsewhere with Ultima Ratio: Black Label . Look carefully at your Total War folder to install properly...
Example 1 -> C:\Program Files (x86)\Steam\steamapps\common\Empire Total War
To return to the original effect of the game, simply uninstall this Addon.