LMU Graphic Settings explained and steam launch command

Stem launch:
LD_PRELOAD=/usr/lib64/libgamemode.so.0 gamemoderun mangohud %command%


What set and use, 6900XT:

in Settings.JSON set
"CEF Mode": 2,

Reflections all low
Shadows off
Post processing low.

This shall give 120fps at 5120 x 1440



-> Setting "Special Effects" to Medium or High in rFactor 2 enables and enhances several visual elements that contribute
to immersion and realism. According to user discussions and documentation, "Special Effects" primarily affects:

Sparks: Enables and improves the quality of spark effects when cars bottom out or make contact with the track1.
Smoke Effects: Controls the quality and presence of smoke, such as tire smoke from skids or burnouts1.
Skidmarks: Adjusts the quality and persistence of skidmarks both on and off the track1.
Lighting FX: Higher settings can add more bloom and dynamic lighting effects, making objects appear brighter and more photo-realistic, especially during changing daylight conditions1.

-> Soft Particles control how particle effects—such as smoke, dust, and tire smoke—blend visually with the environment, 
especially when they are near solid surfaces like the ground or cars. With soft particles enabled, the edges of these 
effects appear smoother and more natural, avoiding harsh or unrealistic lines where the particles intersect with other 
objects.

Setting Options:
Off (0): No soft edge blending; particles may look harsh or have visible edges.
Cheap soft edges (1): Applies a basic softening effect for improved blending at a lower performance cost.
Depth buffered soft edges (2): Uses depth information for more accurate and visually appealing blending, but with a 
higher performance impact6.
Soft particles can significantly enhance visual realism, but they also consume more GPU resources.
If you need better performance, lowering or disabling this setting can help