Glitch about Toyota ft-1 gr.3

In main menu Toyota ft-1 gr.3 looks very great in therms of graphics but in race its graphics are awfull.I can even see the corners of polygons which looks very very bad.This probably a glitch and game uses a worse graphical modelling instead of main modelling. So how i can report this glitch?

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Glitch about Toyota ft-1 gr.3