For multiplayer races, we used the private qualifying mode to avoid crowded tracks. In this mode, it spawns your car somewhere in the final sector and you can start your hotlap immediately. Sometimes, randomly, it picked up the timing as soon as you spawned, and it counted your lap as finished when you cross the line (to start your lap). Resulting in 20 sec lap times. These won't go away even when you complete a full lap afterwards. I have seen that problem occur so far on Sachsenring and Sonoma sprint.