Here is the Vehicle Shader for update 1.2.1.0, this file is to be placed in C:\Program Files (x86)\Farming Simulator 2025\data\shaders, it will allow you to lose the shine effect on the vehicles, noted that this version is for update 1.2.1.0 with each update the file will be reset to zero by Giant, I will update the mods with each new one game update.
This file is to be replaced with your current shader, it does not affect playing in multiplayer or server, it even saves FPS on small PC configurations.
Server