The biggest flaw in vanilla GTA V is flat interiors. MXAO (formerly known as Ambient Occlusion) adds soft shadows in crevices—under car dashboards, between fingers, and inside building corners.
Performance-wise, ReShade shaders can have a minor impact on frame rates, but most modern computers should handle them without issues. However, it's essential to adjust settings to balance performance and visuals. reshade shader fivem best