Hello there! I have problem with stop/back lights when drove BMW M4 by night. Two cars from gt3 class (R8, 720) have no backlights, even when they braking. It's risky when i drive in slipstream on nordschleife. I check it with my headlights on/off ... no difference. From other cars (AMR or R8) onboard i see lights properly. Autodetail option is off ("0"), details are high, no custom settings in .json.
From the very start of the GT3 DLC, there have been users posting about poor visibility of certain car's brake lights. The Mclaren 650S comes to mind. The brake lights worked, but the lights were so skinny, barely a pixel or two tall, that many users couldn't see the brakelights.